message: [TPU] Delete attr_scope that does nothing, now that the forward compatibility window has expired.
diff: @@ -633,14 +633,6 @@ def split_compile_and_replicate(computation,
  with tpu_function.tpu_shard_context(
  num_replicas), ops.control_dependencies([metadata]):
  - # For backward compatibility reasons, we tag replicated inputs with the
  - # _tpu_replicated_input attribute. This does nothing and exists only for
  - # backward compatibility.
  - # TODO(phawkins): delete the attr_scope after 6/28/2018.
  - # pylint: disable=protected-access
  - with graph._attr_scope({
  - "_tpu_replicated_input": attr_value_pb2.AttrValue(b=True)
  - }):
  # Add identity ops so even unused inputs are "consumed" by the
  # computation. This is to avoid orphaned TPUReplicatedInput nodes.
  # TODO(phawkins): consider instead pruning unused TPUReplicatedInput
  @@ -649,7 +641,6 @@ def split_compile_and_replicate(computation,
  array_ops.identity(x, name="replicated_input_{}".format(i))
  for i, x in enumerate(computation_inputs)
  ]
  - # pylint: enable=protected-access
  # If there is an infeed queue, adds the dequeued values to the
  # computation's inputs.
  