revert D76061842 to unblock IFU UDD conveyor (#3067)

Summary: Pull Request resolved: #3067

Reviewed By: kausv

Differential Revision: D76272934

fbshipit-source-id: faf9dd16cfa6b1c7212230467d31204d870df9ee

Author: Mengjiao Zhou

torchrec/modules/hash_mc_metrics.py

@@ -46,11 +46,10 @@ def __init__(
     ) -> None:
         super().__init__()
 
-        # persist scalar logger steps in checkpoint to make sure it is not reset after training job restarted
         self.register_buffer(
             ScalarLogger.STEPS_BUFFER,
             torch.tensor(1, dtype=torch.int64),
-            persistent=True,
+            persistent=False,
         )
 
         self._name: str = name