message: Remove unittest import
diff: @@ -19,7 +19,6 @@ from __future__ import division
  from __future__ import print_function
  import numpy as np
  -import unittest
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  @@ -606,7 +605,6 @@ class SparseReduceTest(test_util.TensorFlowTestCase):
  self._compare(sp_t, reduction_axes, ndims, True, False)
  self._compare(sp_t, reduction_axes, ndims, True, True)
  - @unittest.skipIf(np.__version__ == "1.13.0", "numpy 1.13 bug")
  def testSimpleAndRandomInputs(self):
  if np.__version__ == "1.13.0":
  self.skipTest("numpy 1.13.0 bug")
  @@ -646,7 +644,6 @@ class SparseReduceTest(test_util.TensorFlowTestCase):
  with self.assertRaisesOpError("Invalid reduction dimension 2"):
  sparse_ops.sparse_reduce_max(sp_t, 2).eval()
  - @unittest.skipIf(np.__version__ == "1.13.0", "numpy 1.13 bug")
  def testGradient(self):
  if np.__version__ == "1.13.0":
  self.skipTest("numpy 1.13.0 bug")
  