remove unused OPT_xxx values from mysqld.cc and the related dead code

sql/mysqld.cc

@@ -6727,7 +6727,7 @@ struct my_option my_long_options[]=
   {"autocommit", 0, "Set default value for autocommit (0 or 1)",
    &opt_autocommit, &opt_autocommit, 0,
    GET_BOOL, OPT_ARG, 1, 0, 0, 0, 0, NULL},
-  {"bind-address", OPT_BIND_ADDRESS, "IP address to bind to.",
+  {"bind-address", 0, "IP address to bind to.",
    &my_bind_addr_str, &my_bind_addr_str, 0, GET_STR,
    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"binlog-do-db", OPT_BINLOG_DO_DB,
@@ -8561,18 +8561,6 @@ mysqld_get_one_option(int optid,
     }
     break;
 #endif /* defined(ENABLED_DEBUG_SYNC) */
-  case OPT_ENGINE_CONDITION_PUSHDOWN:
-    /*
-      The last of --engine-condition-pushdown and --optimizer_switch on
-      command line wins (see get_options().
-    */
-    if (global_system_variables.engine_condition_pushdown)
-      global_system_variables.optimizer_switch|=
-        OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
-    else
-      global_system_variables.optimizer_switch&=
-        ~OPTIMIZER_SWITCH_ENGINE_CONDITION_PUSHDOWN;
-    break;
   case OPT_LOG_ERROR:
     /*
       "No --log-error" == "write errors to stderr",

sql/mysqld.h

@@ -550,7 +550,6 @@ extern MYSQL_PLUGIN_IMPORT pthread_key(THD*, THR_THD);
 enum options_mysqld
 {
   OPT_to_set_the_start_number=256,
-  OPT_BIND_ADDRESS,
   OPT_BINLOG_DO_DB,
   OPT_BINLOG_FORMAT,
   OPT_BINLOG_IGNORE_DB,
@@ -558,9 +557,7 @@ enum options_mysqld
   OPT_BOOTSTRAP,
   OPT_CONSOLE,
   OPT_DEBUG_SYNC_TIMEOUT,
-  OPT_DELAY_KEY_WRITE_ALL,
   OPT_DEPRECATED_OPTION,
-  OPT_ENGINE_CONDITION_PUSHDOWN,
   OPT_IGNORE_DB_DIRECTORY,
   OPT_ISAM_LOG,
   OPT_KEY_BUFFER_SIZE,
@@ -576,7 +573,6 @@ enum options_mysqld
   OPT_PLUGIN_LOAD,
   OPT_PLUGIN_LOAD_ADD,
   OPT_PFS_INSTRUMENT,
-  OPT_POOL_OF_THREADS,
   OPT_REPLICATE_DO_DB,
   OPT_REPLICATE_DO_TABLE,
   OPT_REPLICATE_IGNORE_DB,
@@ -587,10 +583,7 @@ enum options_mysqld
   OPT_SAFE,
   OPT_SERVER_ID,
   OPT_SKIP_HOST_CACHE,
-  OPT_SKIP_LOCK,
   OPT_SKIP_RESOLVE,
-  OPT_SKIP_STACK_TRACE,
-  OPT_SKIP_SYMLINKS,
   OPT_SSL_CA,
   OPT_SSL_CAPATH,
   OPT_SSL_CERT,
@@ -598,7 +591,6 @@ enum options_mysqld
   OPT_SSL_CRL,
   OPT_SSL_CRLPATH,
   OPT_SSL_KEY,
-  OPT_UPDATE_LOG,
   OPT_WANT_CORE,
   OPT_MYSQL_COMPATIBILITY,
   OPT_MYSQL_TO_BE_IMPLEMENTED,