revert

Author: NihalHarish

smdebug/tensorflow/base_hook.py

@@ -308,7 +308,6 @@ def _get_writers(self, tensor_name, tensor_ref) -> List[FileWriter]:
     def _initialize_writers(self, only_initialize_if_missing=False) -> None:
         # In keras, sometimes we are not sure if writer is initialized
         # (such as metrics at end of epoch), that's why it passes the flag only_init_if_missing
-        self.distribution_strategy = self._get_distribution_strategy()
         if self.dry_run:
             return