[8102] Simplify code base at new root method WorldObject::CleanupsBeforeDelete Author: VladimirMangos

* Call it from Map::AddObjectToRemoveList and remove now not needed explcit calls
    * Create Gameobject version to make GO with owner more safe for remove

--HG--
branch : trunk

src/game/GameEventMgr.cpp

@@ -1313,10 +1313,7 @@ void GameEventMgr::GameEventUnspawn(int16 event_id)
             objmgr.RemoveCreatureFromGrid(*itr, data);
 
             if( Creature* pCreature = ObjectAccessor::Instance().GetObjectInWorld(MAKE_NEW_GUID(*itr, data->id, HIGHGUID_UNIT), (Creature*)NULL) )
-            {
-                pCreature->CleanupsBeforeDelete();
                 pCreature->AddObjectToRemoveList();
-            }
         }
     }