Bug#33812: mysql client incorrectly parsing DELIMITER

Remove unnecessary and incorrect code that tried
to pull delimiter commands out of the middle of
statements.

mysql-test/r/mysql.result

@@ -38,6 +38,8 @@ t2
 t3
 Tables_in_test
 t1
+delimiter
+1
 _
 Test delimiter : from command line
 a

mysql-test/t/mysql_delimiter.sql

@@ -59,3 +59,9 @@ source t/mysql_delimiter_19799.sql
 use test//
 show tables//
 delimiter ; # Reset delimiter
+
+#
+# Bug #33812: mysql client incorrectly parsing DELIMITER
+#
+select a as delimiter from t1
+delimiter ; # Reset delimiter