BUG#11132 Connections stuck in CLOSE_WAIT

The 4.1 fix is not valid for 5.0. Remove it.


ndb/src/common/mgmcommon/ConfigRetriever.cpp:
  This fix is not valid for 5.0 as we use the mgm server connection for more than
  just fetching the initial configuration

ndb/src/common/mgmcommon/ConfigRetriever.cpp

@@ -139,8 +139,6 @@ ConfigRetriever::getConfig(NdbMgmHandle m_handle){
     return 0;
   }
 
-  ndb_mgm_disconnect(m_handle);
-
   return conf;
 }