message: Dead code elimination.
diff: @@ -411,11 +411,6 @@ class _EagerDefinedFunction(object):
  return outputs
  -def _map_sequence_obj_to_idx(sequence):
  - """Maps objs in the sequence from id(obj) to sequence index."""
  - return {id(x): i for i, x in enumerate(sequence)}
  -
  -
  def _flatten(sequence):
  """A wrapper around `nest.flatten` that also unpacks `IndexedSlices`."""
  # TODO(akshayka): Support `SparseTensor` in a similar fashion.
  