Revert "stop batching multiple CmdList execution when waiting for barriers"

Author: kbenzie

source/adapters/level_zero/event.cpp

@@ -367,12 +367,6 @@ UR_APIEXPORT ur_result_t UR_APICALL urEnqueueEventsWaitWithBarrier(
                                      IsInternal));
   }
 
-  // When executing command lists, allowing batching simply means storing
-  // the CmdLists as the current open batch. That's not what we want here.
-  // Moreover, the current implementation does not allow calling
-  // executeCommandList after an earlier getAvailableCommandList returned some
-  // other CmdList.
-  OkToBatch = false;
   // Execute each command list so the barriers can be encountered.
   for (ur_command_list_ptr_t &CmdList : CmdLists)
     UR_CALL(Queue->executeCommandList(CmdList, false, OkToBatch));