diff --git a/include/my_sys.h b/include/my_sys.h
index c2ba72b4d66..31e59b6bf47 100644
--- a/include/my_sys.h
+++ b/include/my_sys.h
@@ -287,7 +287,6 @@ extern my_bool  my_disable_locking, my_disable_async_io,
 extern my_bool my_disable_sync, my_disable_copystat_in_redel;
 extern char	wild_many,wild_one,wild_prefix;
 extern const char *charsets_dir;
-extern my_bool timed_mutexes;
 
 enum cache_type
 {
diff --git a/mysql-test/main/mysqld--help.result b/mysql-test/main/mysqld--help.result
index af833baddc3..7b5fdce6a2a 100644
--- a/mysql-test/main/mysqld--help.result
+++ b/mysql-test/main/mysqld--help.result
@@ -1364,8 +1364,6 @@ The following specify which files/extra groups are read (specified before remain
  created to handle remaining clients.
  --thread-stack=#    The stack size for each thread
  --time-format=name  The TIME format (ignored)
- --timed-mutexes     Specify whether to time mutexes. Deprecated, has no
- effect.
  --tls-version=name  TLS protocol version for secure connections.. Any
  combination of: TLSv1.0, TLSv1.1, TLSv1.2, TLSv1.3
  --tmp-disk-table-size=# 
@@ -1772,7 +1770,6 @@ thread-pool-priority auto
 thread-pool-stall-limit 500
 thread-stack 299008
 time-format %H:%i:%s
-timed-mutexes FALSE
 tmp-disk-table-size 18446744073709551615
 tmp-memory-table-size 16777216
 tmp-table-size 16777216
diff --git a/mysql-test/main/variables.result b/mysql-test/main/variables.result
index 66acb163661..5a5247cf05e 100644
--- a/mysql-test/main/variables.result
+++ b/mysql-test/main/variables.result
@@ -187,24 +187,6 @@ set global concurrent_insert=DEFAULT;
 select @@concurrent_insert;
 @@concurrent_insert
 AUTO
-set global timed_mutexes=ON;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-show variables like 'timed_mutexes';
-Variable_name	Value
-timed_mutexes	ON
-select * from information_schema.session_variables where variable_name like 'timed_mutexes';
-VARIABLE_NAME	VARIABLE_VALUE
-TIMED_MUTEXES	ON
-set global timed_mutexes=0;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-show variables like 'timed_mutexes';
-Variable_name	Value
-timed_mutexes	OFF
-select * from information_schema.session_variables where variable_name like 'timed_mutexes';
-VARIABLE_NAME	VARIABLE_VALUE
-TIMED_MUTEXES	OFF
 set default_storage_engine=MYISAM, default_storage_engine="HEAP", global default_storage_engine="MERGE";
 show local variables like 'default_storage_engine';
 Variable_name	Value
diff --git a/mysql-test/main/variables.test b/mysql-test/main/variables.test
index eab323dda3d..495ab101352 100644
--- a/mysql-test/main/variables.test
+++ b/mysql-test/main/variables.test
@@ -125,13 +125,6 @@ select * from information_schema.session_variables where variable_name like 'con
 set global concurrent_insert=DEFAULT;
 select @@concurrent_insert;
 
-set global timed_mutexes=ON;
-show variables like 'timed_mutexes';
-select * from information_schema.session_variables where variable_name like 'timed_mutexes';
-set global timed_mutexes=0;
-show variables like 'timed_mutexes';
-select * from information_schema.session_variables where variable_name like 'timed_mutexes';
-
 set default_storage_engine=MYISAM, default_storage_engine="HEAP", global default_storage_engine="MERGE";
 show local variables like 'default_storage_engine';
 select * from information_schema.session_variables where variable_name like 'default_storage_engine';
diff --git a/mysql-test/suite/sys_vars/r/sysvars_server_embedded.result b/mysql-test/suite/sys_vars/r/sysvars_server_embedded.result
index 55e6bb0dea1..0e04f3b78b7 100644
--- a/mysql-test/suite/sys_vars/r/sysvars_server_embedded.result
+++ b/mysql-test/suite/sys_vars/r/sysvars_server_embedded.result
@@ -3433,16 +3433,6 @@ NUMERIC_BLOCK_SIZE	1
 ENUM_VALUE_LIST	NULL
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	REQUIRED
-VARIABLE_NAME	THREAD_CONCURRENCY
-VARIABLE_SCOPE	GLOBAL
-VARIABLE_TYPE	BIGINT UNSIGNED
-VARIABLE_COMMENT	Permits the application to give the threads system a hint for the desired number of threads that should be run at the same time.This variable has no effect, and is deprecated. It will be removed in a future release.
-NUMERIC_MIN_VALUE	1
-NUMERIC_MAX_VALUE	512
-NUMERIC_BLOCK_SIZE	1
-ENUM_VALUE_LIST	NULL
-READ_ONLY	YES
-COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	THREAD_HANDLING
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	ENUM
@@ -3463,16 +3453,6 @@ NUMERIC_BLOCK_SIZE	1024
 ENUM_VALUE_LIST	NULL
 READ_ONLY	YES
 COMMAND_LINE_ARGUMENT	REQUIRED
-VARIABLE_NAME	TIMED_MUTEXES
-VARIABLE_SCOPE	GLOBAL
-VARIABLE_TYPE	BOOLEAN
-VARIABLE_COMMENT	Specify whether to time mutexes. Deprecated, has no effect.
-NUMERIC_MIN_VALUE	NULL
-NUMERIC_MAX_VALUE	NULL
-NUMERIC_BLOCK_SIZE	NULL
-ENUM_VALUE_LIST	OFF,ON
-READ_ONLY	NO
-COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	TIMESTAMP
 VARIABLE_SCOPE	SESSION ONLY
 VARIABLE_TYPE	DOUBLE
diff --git a/mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result b/mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result
index bf52f23c630..317155fe07a 100644
--- a/mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result
+++ b/mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result
@@ -4133,16 +4133,6 @@ NUMERIC_BLOCK_SIZE	1
 ENUM_VALUE_LIST	NULL
 READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	REQUIRED
-VARIABLE_NAME	THREAD_CONCURRENCY
-VARIABLE_SCOPE	GLOBAL
-VARIABLE_TYPE	BIGINT UNSIGNED
-VARIABLE_COMMENT	Permits the application to give the threads system a hint for the desired number of threads that should be run at the same time.This variable has no effect, and is deprecated. It will be removed in a future release.
-NUMERIC_MIN_VALUE	1
-NUMERIC_MAX_VALUE	512
-NUMERIC_BLOCK_SIZE	1
-ENUM_VALUE_LIST	NULL
-READ_ONLY	YES
-COMMAND_LINE_ARGUMENT	REQUIRED
 VARIABLE_NAME	THREAD_HANDLING
 VARIABLE_SCOPE	GLOBAL
 VARIABLE_TYPE	ENUM
@@ -4253,16 +4243,6 @@ NUMERIC_BLOCK_SIZE	1024
 ENUM_VALUE_LIST	NULL
 READ_ONLY	YES
 COMMAND_LINE_ARGUMENT	REQUIRED
-VARIABLE_NAME	TIMED_MUTEXES
-VARIABLE_SCOPE	GLOBAL
-VARIABLE_TYPE	BOOLEAN
-VARIABLE_COMMENT	Specify whether to time mutexes. Deprecated, has no effect.
-NUMERIC_MIN_VALUE	NULL
-NUMERIC_MAX_VALUE	NULL
-NUMERIC_BLOCK_SIZE	NULL
-ENUM_VALUE_LIST	OFF,ON
-READ_ONLY	NO
-COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	TIMESTAMP
 VARIABLE_SCOPE	SESSION ONLY
 VARIABLE_TYPE	DOUBLE
diff --git a/mysql-test/suite/sys_vars/r/thread_concurrency_basic.result b/mysql-test/suite/sys_vars/r/thread_concurrency_basic.result
deleted file mode 100644
index ea8c0168212..00000000000
--- a/mysql-test/suite/sys_vars/r/thread_concurrency_basic.result
+++ /dev/null
@@ -1,21 +0,0 @@
-select @@global.thread_concurrency;
-@@global.thread_concurrency
-10
-select @@session.thread_concurrency;
-ERROR HY000: Variable 'thread_concurrency' is a GLOBAL variable
-show global variables like 'thread_concurrency';
-Variable_name	Value
-thread_concurrency	10
-show session variables like 'thread_concurrency';
-Variable_name	Value
-thread_concurrency	10
-select * from information_schema.global_variables where variable_name='thread_concurrency';
-VARIABLE_NAME	VARIABLE_VALUE
-THREAD_CONCURRENCY	10
-select * from information_schema.session_variables where variable_name='thread_concurrency';
-VARIABLE_NAME	VARIABLE_VALUE
-THREAD_CONCURRENCY	10
-set global thread_concurrency=1;
-ERROR HY000: Variable 'thread_concurrency' is a read only variable
-set session thread_concurrency=1;
-ERROR HY000: Variable 'thread_concurrency' is a read only variable
diff --git a/mysql-test/suite/sys_vars/r/timed_mutexes_basic.result b/mysql-test/suite/sys_vars/r/timed_mutexes_basic.result
deleted file mode 100644
index 715c105fa46..00000000000
--- a/mysql-test/suite/sys_vars/r/timed_mutexes_basic.result
+++ /dev/null
@@ -1,124 +0,0 @@
-SET @global_start_value = @@global.timed_mutexes;
-SELECT @global_start_value;
-@global_start_value
-0
-'#--------------------FN_DYNVARS_177_01------------------------#'
-SET @@global.timed_mutexes = 1;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SET @@global.timed_mutexes = DEFAULT;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-0
-'#---------------------FN_DYNVARS_177_02-------------------------#'
-SET timed_mutexes = 1;
-ERROR HY000: Variable 'timed_mutexes' is a GLOBAL variable and should be set with SET GLOBAL
-SELECT @@timed_mutexes;
-@@timed_mutexes
-0
-SELECT global.timed_mutexes;
-ERROR 42S02: Unknown table 'global' in field list
-SET global timed_mutexes = 1;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-1
-'#--------------------FN_DYNVARS_177_03------------------------#'
-SET @@global.timed_mutexes = 0;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-0
-SET @@global.timed_mutexes = 1;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-1
-'#--------------------FN_DYNVARS_177_04-------------------------#'
-SET @@global.timed_mutexes = -1;
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of '-1'
-SET @@global.timed_mutexes = 2;
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of '2'
-SET @@global.timed_mutexes = "T";
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of 'T'
-SET @@global.timed_mutexes = "Y";
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of 'Y'
-SET @@global.timed_mutexes = _true;
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of '_true'
-SET @@global.timed_mutexes = 0N;
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of '0N'
-SET @@global.timed_mutexes = 1+1;
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of '2'
-SET @@global.timed_mutexes = 0FF;
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of '0FF'
-SET @@global.timed_mutexes = '0';
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of '0'
-SET @@global.timed_mutexes = N;
-ERROR 42000: Variable 'timed_mutexes' can't be set to the value of 'N'
-'#-------------------FN_DYNVARS_177_05----------------------------#'
-SET @@session.timed_mutexes = 0;
-ERROR HY000: Variable 'timed_mutexes' is a GLOBAL variable and should be set with SET GLOBAL
-SET @@timed_mutexes = 0;
-ERROR HY000: Variable 'timed_mutexes' is a GLOBAL variable and should be set with SET GLOBAL
-SET @@local.timed_mutexes = 0;
-ERROR HY000: Variable 'timed_mutexes' is a GLOBAL variable and should be set with SET GLOBAL
-SELECT @@session.timed_mutexes;
-ERROR HY000: Variable 'timed_mutexes' is a GLOBAL variable
-SELECT @@local.timed_mutexes;
-ERROR HY000: Variable 'timed_mutexes' is a GLOBAL variable
-'#----------------------FN_DYNVARS_177_06------------------------#'
-SELECT count(VARIABLE_VALUE) FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
-WHERE VARIABLE_NAME='timed_mutexes';
-count(VARIABLE_VALUE)
-1
-'#----------------------FN_DYNVARS_177_07------------------------#'
-SELECT IF(@@global.timed_mutexes, "ON", "OFF") = VARIABLE_VALUE
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
-WHERE VARIABLE_NAME='timed_mutexes';
-IF(@@global.timed_mutexes, "ON", "OFF") = VARIABLE_VALUE
-1
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-1
-SELECT VARIABLE_VALUE 
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
-WHERE VARIABLE_NAME='timed_mutexes';
-VARIABLE_VALUE
-ON
-'#---------------------FN_DYNVARS_177_08-------------------------#'
-SET @@global.timed_mutexes = OFF;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-0
-SET @@global.timed_mutexes = ON;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-1
-'#---------------------FN_DYNVARS_177_09----------------------#'
-SET @@global.timed_mutexes = TRUE;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-1
-SET @@global.timed_mutexes = FALSE;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-0
-SET @@global.timed_mutexes = @global_start_value;
-Warnings:
-Warning	1287	'@@timed_mutexes' is deprecated and will be removed in a future release
-SELECT @@global.timed_mutexes;
-@@global.timed_mutexes
-0
diff --git a/mysql-test/suite/sys_vars/t/thread_concurrency_basic.test b/mysql-test/suite/sys_vars/t/thread_concurrency_basic.test
deleted file mode 100644
index 6d4ca3e2b4d..00000000000
--- a/mysql-test/suite/sys_vars/t/thread_concurrency_basic.test
+++ /dev/null
@@ -1,18 +0,0 @@
-#
-# only global
-#
-select @@global.thread_concurrency;
---error ER_INCORRECT_GLOBAL_LOCAL_VAR
-select @@session.thread_concurrency;
-show global variables like 'thread_concurrency';
-show session variables like 'thread_concurrency';
-select * from information_schema.global_variables where variable_name='thread_concurrency';
-select * from information_schema.session_variables where variable_name='thread_concurrency';
-
-#
-# show that it's read-only
-#
---error ER_INCORRECT_GLOBAL_LOCAL_VAR
-set global thread_concurrency=1;
---error ER_INCORRECT_GLOBAL_LOCAL_VAR
-set session thread_concurrency=1;
diff --git a/mysql-test/suite/sys_vars/t/timed_mutexes_basic.test b/mysql-test/suite/sys_vars/t/timed_mutexes_basic.test
deleted file mode 100644
index 9422ecdabf9..00000000000
--- a/mysql-test/suite/sys_vars/t/timed_mutexes_basic.test
+++ /dev/null
@@ -1,169 +0,0 @@
-################## mysql-test\t\timed_mutexes_basic.test ######################
-#                                                                             #
-# Variable Name: timed_mutexes                                                #
-# Scope: GLOBAL                                                               #
-# Access Type: Dynamic                                                        #
-# Data Type: boolean                                                          #
-# Default Value: OFF                                                          #
-# Valid Values: ON, OFF                                                       #
-#                                                                             #
-#                                                                             #
-# Creation Date: 2008-02-07                                                   #
-# Author:  Rizwan                                                             #
-#                                                                             #
-# Description: Test Cases of Dynamic System Variable timed_mutexes            #
-#              that checks the behavior of this variable in the following ways#
-#              * Default Value                                                #
-#              * Valid & Invalid values                                       #
-#              * Scope & Access method                                        #
-#              * Data Integrity                                               #
-#                                                                             #
-# Reference: http://dev.mysql.com/doc/refman/5.1/en/                          #
-#  server-system-variables.html                                               #
-#                                                                             #
-###############################################################################
-
---source include/load_sysvars.inc
-######################################################################## 
-#                    START OF timed_mutexes TESTS                      #
-######################################################################## 
-
-
-##############################################################################
-#      Saving initial value of timed_mutexes in a temporary variable         #
-##############################################################################
-
-SET @global_start_value = @@global.timed_mutexes;
-SELECT @global_start_value;
-
---echo '#--------------------FN_DYNVARS_177_01------------------------#'
-######################################################################## 
-#           Display the DEFAULT value of timed_mutexes                 #
-######################################################################## 
-
-SET @@global.timed_mutexes = 1;
-SET @@global.timed_mutexes = DEFAULT;
-SELECT @@global.timed_mutexes;
-
---echo '#---------------------FN_DYNVARS_177_02-------------------------#'
-############################################################################# 
-#   Check if timed_mutexes can be accessed with and without @@ sign         #
-############################################################################# 
-
---Error ER_GLOBAL_VARIABLE
-SET timed_mutexes = 1;
-SELECT @@timed_mutexes;
---Error ER_UNKNOWN_TABLE
-SELECT global.timed_mutexes;
-
-SET global timed_mutexes = 1;
-SELECT @@global.timed_mutexes;
-
-
---echo '#--------------------FN_DYNVARS_177_03------------------------#'
-######################################################################## 
-#              Change the value of timed_mutexes to a valid value      #
-######################################################################## 
-
-SET @@global.timed_mutexes = 0;
-SELECT @@global.timed_mutexes;
-SET @@global.timed_mutexes = 1;
-SELECT @@global.timed_mutexes;
-
-
---echo '#--------------------FN_DYNVARS_177_04-------------------------#'
-########################################################################### 
-#               Change the value of timed_mutexes to invalid value        #
-########################################################################### 
-
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = -1;
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = 2;
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = "T";
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = "Y";
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = _true;
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = 0N;
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = 1+1;
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = 0FF;
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = '0';
---Error ER_WRONG_VALUE_FOR_VAR
-SET @@global.timed_mutexes = N;
-
-
---echo '#-------------------FN_DYNVARS_177_05----------------------------#'
-########################################################################### 
-#           Test if accessing session timed_mutexes gives error           #
-########################################################################### 
-
---Error ER_GLOBAL_VARIABLE
-SET @@session.timed_mutexes = 0;
---Error ER_GLOBAL_VARIABLE
-SET @@timed_mutexes = 0;
---Error ER_GLOBAL_VARIABLE
-SET @@local.timed_mutexes = 0;
---Error ER_INCORRECT_GLOBAL_LOCAL_VAR
-SELECT @@session.timed_mutexes;
---Error ER_INCORRECT_GLOBAL_LOCAL_VAR
-SELECT @@local.timed_mutexes;
-
---echo '#----------------------FN_DYNVARS_177_06------------------------#'
-######################################################################### 
-#     Check if the value in SESSION Table contains variable value       #
-#########################################################################
-
-SELECT count(VARIABLE_VALUE) FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
-WHERE VARIABLE_NAME='timed_mutexes';
-
-
---echo '#----------------------FN_DYNVARS_177_07------------------------#'
-######################################################################### 
-#     Check if the value in GLOBAL Table matches value in variable      #
-#########################################################################
-
-SELECT IF(@@global.timed_mutexes, "ON", "OFF") = VARIABLE_VALUE
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
-WHERE VARIABLE_NAME='timed_mutexes';
-SELECT @@global.timed_mutexes;
-
-SELECT VARIABLE_VALUE 
-FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
-WHERE VARIABLE_NAME='timed_mutexes';
-
---echo '#---------------------FN_DYNVARS_177_08-------------------------#'
-################################################################### 
-#        Check if ON and OFF values can be used on variable       #
-################################################################### 
-
-SET @@global.timed_mutexes = OFF;
-SELECT @@global.timed_mutexes;
-SET @@global.timed_mutexes = ON;
-SELECT @@global.timed_mutexes;
-
---echo '#---------------------FN_DYNVARS_177_09----------------------#'
-################################################################### 
-#      Check if TRUE and FALSE values can be used on variable     #
-################################################################### 
-
-SET @@global.timed_mutexes = TRUE;
-SELECT @@global.timed_mutexes;
-SET @@global.timed_mutexes = FALSE;
-SELECT @@global.timed_mutexes;
-
-##############################  
-#   Restore initial value    #
-##############################
-
-SET @@global.timed_mutexes = @global_start_value;
-SELECT @@global.timed_mutexes;
-
-###############################################################
-#                    END OF timed_mutexes TESTS               #
-############################################################### 
diff --git a/mysys/my_static.c b/mysys/my_static.c
index fc4c60bc237..4bc0bae0c33 100644
--- a/mysys/my_static.c
+++ b/mysys/my_static.c
@@ -23,7 +23,6 @@
 #include "my_static.h"
 #include "my_alarm.h"
 
-my_bool timed_mutexes= 0;
 
 	/* from my_init */
 char *	home_dir=0;
diff --git a/plugin/feedback/feedback.cc b/plugin/feedback/feedback.cc
index 6d6ef468cc6..b0fbc1abcde 100644
--- a/plugin/feedback/feedback.cc
+++ b/plugin/feedback/feedback.cc
@@ -184,7 +184,6 @@ static LEX_STRING vars_filter[]= {
   {C_STRING_WITH_LEN("table_open_cache")},
   {C_STRING_WITH_LEN("thread_handling")},
   {C_STRING_WITH_LEN("time_zone")},
-  {C_STRING_WITH_LEN("timed_mutexes")},
   {C_STRING_WITH_LEN("version%")},
   {0, 0}
 };
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 08332672715..4493bd3dd3e 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -459,7 +459,7 @@ Atomic_counter<uint32_t> thread_count;
 bool shutdown_wait_for_slaves;
 int32 slave_open_temp_tables;
 ulong thread_created;
-ulong back_log, connect_timeout, concurrency, server_id;
+ulong back_log, connect_timeout, server_id;
 ulong what_to_log;
 ulong slow_launch_time;
 ulong open_files_limit, max_binlog_size;
@@ -5050,6 +5050,10 @@ static int init_server_components()
          compatibility, but do not have any effect otherwise, they behave
          as if supplied with --loose. Whenever a deprecated option is removed
          it should be appended here. */
+      {"thread-concurrency", OPT_DEPRECATED_OPTION, "",
+       0, 0, 0, GET_NO_ARG, OPT_ARG, 0, 0, 0, 0, 0, 0},
+      {"timed-mutexes", OPT_DEPRECATED_OPTION, "",
+       0, 0, 0, GET_NO_ARG, OPT_ARG, 0, 0, 0, 0, 0, 0},
       {0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
     };
     /*
diff --git a/sql/sys_vars.cc b/sql/sys_vars.cc
index 83b5c628e3d..fc5b11b0150 100644
--- a/sql/sys_vars.cc
+++ b/sql/sys_vars.cc
@@ -2863,23 +2863,6 @@ static Sys_var_charptr Sys_socket(
        READ_ONLY GLOBAL_VAR(mysqld_unix_port), CMD_LINE(REQUIRED_ARG),
        IN_FS_CHARSET, DEFAULT(0));
 
-/* 
-  thread_concurrency is a no-op on all platforms since
-  MySQL 5.1.  It will be removed in the context of
-  WL#5265
-*/
-static Sys_var_ulong Sys_thread_concurrency(
-       "thread_concurrency",
-       "Permits the application to give the threads system a hint for "
-       "the desired number of threads that should be run at the same time."
-       "This variable has no effect, and is deprecated. "
-       "It will be removed in a future release.",
-       READ_ONLY GLOBAL_VAR(concurrency),
-       CMD_LINE(REQUIRED_ARG, OPT_THREAD_CONCURRENCY),
-       VALID_RANGE(1, 512), DEFAULT(DEFAULT_CONCURRENCY), BLOCK_SIZE(1),
-       NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0),
-       DEPRECATED("")); // since 5.5.37
-
 static Sys_var_ulonglong Sys_thread_stack(
        "thread_stack", "The stack size for each thread",
        READ_ONLY GLOBAL_VAR(my_thread_stack_size), CMD_LINE(REQUIRED_ARG),
@@ -3894,13 +3877,6 @@ static Sys_var_ulonglong Sys_tmp_disk_table_size(
        DEFAULT((ulonglong)~(intptr)0),
        BLOCK_SIZE(1));
 
-static Sys_var_mybool Sys_timed_mutexes(
-       "timed_mutexes",
-       "Specify whether to time mutexes. Deprecated, has no effect.",
-       GLOBAL_VAR(timed_mutexes), CMD_LINE(OPT_ARG), DEFAULT(0),
-       NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(0),
-       DEPRECATED("")); // since 5.5.39
-
 static Sys_var_charptr Sys_version(
        "version", "Server version number. It may also include a suffix "
        "with configuration or build information. -debug indicates "
diff --git a/sql/upgrade_conf_file.cc b/sql/upgrade_conf_file.cc
index 7219f948745..8f3295755ee 100644
--- a/sql/upgrade_conf_file.cc
+++ b/sql/upgrade_conf_file.cc
@@ -119,7 +119,9 @@ static const char *removed_variables[] =
 "rpl_recovery_rank",
 "sql_big_tables",
 "sql_low_priority_updates",
-"sql_max_join_size"
+"sql_max_join_size",
+"thread_concurrency",
+"timed_mutexes"
 };