[CP][BUGFIX] fix lob remote read

src/storage/lob/ob_lob_manager.cpp

@@ -3597,7 +3597,6 @@ int ObLobQueryRemoteReader::do_fetch_rpc_buffer(ObLobAccessParam& param,
     if (handle.has_more()) {
       if (OB_SUCCESS != (ret = handle.get_more(rpc_buffer))) {
         STORAGE_LOG(WARN, "get_more(send request) failed", K(ret));
-        ret = OB_DATA_SOURCE_TIMEOUT;
       } else if (rpc_buffer.get_position() < 0) {
         ret = OB_ERR_SYS;
         LOG_ERROR("rpc buffer has no data", K(ret), K(rpc_buffer));