message: updated test comment and addressed lint issue
diff: @@ -51,8 +51,7 @@ class UniqueTest(test_base.DatasetTestBase, parameterized.TestCase):
  for test_case, expected in test_cases:
  current_test_case = test_case
  self.assertDatasetProduces(dataset, [
  - compat.as_bytes(
  - element) if dtype == dtypes.string else element
  + compat.as_bytes(element) if dtype == dtypes.string else element
  for element in expected
  ])
  @@ -83,8 +82,6 @@ class UniqueTest(test_base.DatasetTestBase, parameterized.TestCase):
  def testTypeMismatch(self):
  # raises InternalError when dtypes don't match.
  - # NOTE: Generating the following expected outputs can be considered/taken up as an
  - # enhancement in the experimental API.
  with self.assertRaises(errors.InternalError):
  self._testSimpleHelper(dtypes.string, [
  (["hello", 1, 2, 1], ["hello"]),
  