1 files changed, 0 insertions, 39 deletions
diff --git a/sql/vers_utils.h b/sql/vers_utils.h
index e896f84135e..2bea191da9e 100644
--- a/sql/vers_utils.h
+++ b/sql/vers_utils.h
@@ -5,43 +5,4 @@
 #include "sql_class.h"
 #include "vers_string.h"
 
-class MDL_auto_lock
-{
-  THD *thd;
-  TABLE_LIST &table;
-  bool error;
-
-public:
-  MDL_auto_lock(THD *_thd, TABLE_LIST &_table) :
-    thd(_thd), table(_table)
-  {
-    DBUG_ASSERT(thd);
-    MDL_request protection_request;
-    if (thd->global_read_lock.can_acquire_protection())
-    {
-      error= true;
-      return;
-    }
-    protection_request.init(MDL_key::GLOBAL, "", "", MDL_INTENTION_EXCLUSIVE,
-                            MDL_EXPLICIT);
-    error= thd->mdl_context.acquire_lock(&protection_request, thd->variables.lock_wait_timeout);
-    if (error)
-      return;
-
-    table.mdl_request.init(MDL_key::TABLE, table.db.str, table.table_name.str, MDL_EXCLUSIVE, MDL_EXPLICIT);
-    error= thd->mdl_context.acquire_lock(&table.mdl_request, thd->variables.lock_wait_timeout);
-    thd->mdl_context.release_lock(protection_request.ticket);
-  }
-  ~MDL_auto_lock()
-  {
-    if (!error)
-    {
-      DBUG_ASSERT(table.mdl_request.ticket);
-      thd->mdl_context.release_lock(table.mdl_request.ticket);
-      table.mdl_request.ticket= NULL;
-    }
-  }
-  bool acquire_error() const { return error; }
-};
-
 #endif // VERS_UTILS_INCLUDED