message: Remove unused class in export test file.
diff: @@ -24,7 +24,6 @@ import time
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  -from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
  @@ -34,21 +33,6 @@ from tensorflow.python.saved_model.model_utils import export_output
  from tensorflow.python.saved_model.model_utils import export_utils
  -class LabeledTensorMock(object):
  - """Mock class emulating LabeledTensor."""
  -
  - def __init__(self):
  - self.tensor = constant_op.constant([1])
  -
  -
  -def _convert_labeled_tensor_mock_to_tensor(value, *args, **kwargs):
  - return ops.internal_convert_to_tensor(value.tensor, *args, **kwargs)
  -
  -
  -ops.register_tensor_conversion_function(LabeledTensorMock,
  - _convert_labeled_tensor_mock_to_tensor)
  -
  -
  class ExportTest(test_util.TensorFlowTestCase):
  @test_util.deprecated_graph_mode_only
  