MW-86 Removed unnecessary wsrep_sync_wait before processing SQLCOM_REPLACE

Sync waiting before processing SQLCOM_REPLACE was not necessary given that
this case falls through to processing of SQLCOM_INSERT. In case of
SQLCOM_REPLACE, wsrep_sync_wait would be called twice.
Signed-off-by: Jan Lindström <jan.lindstrom@mariadb.com>

sql/sql_parse.cc

@@ -3254,7 +3254,6 @@ case SQLCOM_PREPARE:
     break;
   }
   case SQLCOM_REPLACE:
-      WSREP_SYNC_WAIT(thd, WSREP_SYNC_WAIT_BEFORE_INSERT_REPLACE);
 #ifndef DBUG_OFF
     if (mysql_bin_log.is_open())
     {