unused variable max_prep_stmt_count removed

sql/mysqld.cc

@@ -3597,7 +3597,7 @@ enum options_mysqld
   OPT_MAX_SEEKS_FOR_KEY, OPT_MAX_TMP_TABLES, OPT_MAX_USER_CONNECTIONS,
   OPT_MAX_LENGTH_FOR_SORT_DATA,
   OPT_MAX_WRITE_LOCK_COUNT, OPT_BULK_INSERT_BUFFER_SIZE,
-  OPT_MAX_ERROR_COUNT, OPT_MAX_PREP_STMT,
+  OPT_MAX_ERROR_COUNT,
   OPT_MYISAM_BLOCK_SIZE, OPT_MYISAM_MAX_EXTRA_SORT_FILE_SIZE,
   OPT_MYISAM_MAX_SORT_FILE_SIZE, OPT_MYISAM_SORT_BUFFER_SIZE,
   OPT_NET_BUFFER_LENGTH, OPT_NET_RETRY_COUNT,
@@ -4386,11 +4386,6 @@ The minimum value for this variable is 4096.",
     (gptr*) &global_system_variables.max_length_for_sort_data,
     (gptr*) &max_system_variables.max_length_for_sort_data, 0, GET_ULONG,
     REQUIRED_ARG, 1024, 4, 8192*1024L, 0, 1, 0},
-  {"max_prepared_statements", OPT_MAX_PREP_STMT,
-   "Max number of prepared_statements for a thread.",
-   (gptr*) &global_system_variables.max_prep_stmt_count,
-   (gptr*) &max_system_variables.max_prep_stmt_count, 0, GET_ULONG,
-   REQUIRED_ARG, DEFAULT_PREP_STMT_COUNT, 0, ~0L, 0, 1, 0},
   {"max_relay_log_size", OPT_MAX_RELAY_LOG_SIZE,
    "If non-zero: relay log will be rotated automatically when the size exceeds this value; if zero (the default): when the size exceeds max_binlog_size. 0 expected, the minimum value for this variable is 4096.",
    (gptr*) &max_relay_log_size, (gptr*) &max_relay_log_size, 0, GET_ULONG,

sql/set_var.cc

@@ -202,8 +202,6 @@ sys_var_thd_ha_rows	sys_sql_max_join_size("sql_max_join_size",
 					      &SV::max_join_size,
 					      fix_max_join_size);
 #endif
-sys_var_thd_ulong	sys_max_prep_stmt_count("max_prepared_statements",
-						&SV::max_prep_stmt_count);
 sys_var_long_ptr	sys_max_relay_log_size("max_relay_log_size",
                                                &max_relay_log_size,
                                                fix_max_relay_log_size);
@@ -462,7 +460,6 @@ sys_var *sys_variables[]=
   &sys_max_heap_table_size,
   &sys_max_join_size,
   &sys_max_length_for_sort_data,
-  &sys_max_prep_stmt_count,
   &sys_max_relay_log_size,
   &sys_max_seeks_for_key,
   &sys_max_sort_length,
@@ -653,7 +650,6 @@ struct show_var_st init_vars[]= {
   {sys_max_seeks_for_key.name,  (char*) &sys_max_seeks_for_key,	    SHOW_SYS},
   {sys_max_length_for_sort_data.name, (char*) &sys_max_length_for_sort_data,
    SHOW_SYS},
-  {sys_max_prep_stmt_count.name,(char*) &sys_max_prep_stmt_count,   SHOW_SYS},
   {sys_max_sort_length.name,	(char*) &sys_max_sort_length,	    SHOW_SYS},
   {sys_max_user_connections.name,(char*) &sys_max_user_connections, SHOW_SYS},
   {sys_max_tmp_tables.name,	(char*) &sys_max_tmp_tables,	    SHOW_SYS},

sql/sql_class.h

@@ -373,7 +373,6 @@ struct system_variables
   ulong max_error_count;
   ulong max_heap_table_size;
   ulong max_length_for_sort_data;
-  ulong max_prep_stmt_count;
   ulong max_sort_length;
   ulong max_tmp_tables;
   ulong myisam_repair_threads;

sql/unireg.h

@@ -84,7 +84,6 @@
 #define TRANS_MEM_ROOT_PREALLOC   4096
 
 #define DEFAULT_ERROR_COUNT	64
-#define DEFAULT_PREP_STMT_COUNT	64
 #define EXTRA_RECORDS	10			/* Extra records in sort */
 #define SCROLL_EXTRA	5			/* Extra scroll-rows. */
 #define FIELD_NAME_USED ((uint) 32768)		/* Bit set if fieldname used */