Promotion followed by rebuild works

Make sure that recovery.conf file does not exist after promotion.
The file is renamed to recovery.done, like in upstream.

src/backend/fts/ftsmessagehandler.c

@@ -116,7 +116,6 @@ HandleFtsWalRepSyncRepOff(void)
 			(errmsg("turning off synchronous wal replication due to FTS request")));
 	UnsetSyncStandbysDefined();
 	GetMirrorStatus(&response);
-
 	SendFtsResponse(&response, FTS_MSG_SYNCREP_OFF);
 }