message: Remove debug print from unit test
diff: @@ -100,8 +100,6 @@ class ExtractImagePatchesGradTest(test.TestCase):
  err = gradient_checker.compute_gradient_error(in_val, in_shape,
  out_val, out_shape)
  -
  - print('extract_image_patches gradient err: %.4e' % err)
  self.assertLess(err, 1e-4)
  @test_util.run_deprecated_v1
  @@ -152,8 +150,6 @@ class ExtractImagePatchesGradTest(test.TestCase):
  err = gradient_checker.compute_gradient_error(in_val, in_shape,
  out_val, out_shape)
  -
  - print('extract_image_patches gradient err: %.4e' % err)
  self.assertLess(err, 1e-4)
  @test_util.run_deprecated_v1
  