message: Fix bug where sample weights were being ignored in the
  tf.distribute.Strategy / numpy input case.
diff: @@ -2191,7 +2191,6 @@ class Model(Network):
  else:
  x = dataset_ops.Dataset.from_tensor_slices((var_x, var_y))
  - x = dataset_ops.Dataset.from_tensor_slices((var_x, var_y))
  if shuffle:
  # 1024 is a good buffer size since it is much larger than the average
  # batch size provided by the user and provides sufficient randomness.
  