message: Remove unnecessary set_model overwrite in BackupAndRestore calllback
diff: @@ -1628,9 +1628,6 @@ class BackupAndRestore(Callback):
  # restore checkpoint at on_train_begin().
  self._chief_worker_only = False
  - def set_model(self, model):
  - self.model = model
  -
  def on_train_begin(self, logs=None):
  # TrainingState is used to manage the training state needed for
  # failure-recovery of a worker in training.
  