message: Removed graph and session setup from unit test
diff: @@ -1326,14 +1326,13 @@ class CheckpointingTests(test.TestCase):
  @test_util.run_in_graph_and_eager_modes
  def test_restore_after_adding_empty_checkpointable_data_structure(self):
  - with ops.Graph().as_default(), self.session(graph=ops.get_default_graph()):
  model = NonLayerCheckpointable()
  checkpoint = checkpointable_utils.Checkpoint(model=model)
  checkpoint.restore(None).initialize_or_restore()
  checkpoint_directory = self.get_temp_dir()
  checkpoint_prefix = os.path.join(checkpoint_directory, "ckpt")
  save_path = checkpoint.save(checkpoint_prefix)
  - with ops.Graph().as_default(), self.session(graph=ops.get_default_graph()):
  + ops.reset_default_graph()
  model = NonLayerCheckpointable()
  model.dict = {"a": 1}
  model.list = {"b": 1}
  