message: Fix AbcTest.testAbstract assertion
diff: @@ -335,8 +335,7 @@ class ForwardMethodsTest(test_util.TensorFlowTestCase):
  class AbcTest(test_util.TensorFlowTestCase):
  def testAbstract(self):
  - msg = "Can't instantiate .* abstract methods"
  - with self.assertRaisesRegex(TypeError, msg):
  + with self.assertRaises(TypeError):
  AbstractModule() # pylint: disable=abstract-class-instantiated
  def testConcrete(self):
  