message: updated mnist_util BUILD entry
diff: @@ -260,10 +260,9 @@ cc_library(
  name = "mnist_gradients_testutil",
  srcs = [
  "mnist_gradients_testutil.cc",
  - "mnist_gradients_testutil.h",
  ],
  hdrs = [
  - "gradients.h",
  + "mnist_gradients_testutil.h",
  ],
  visibility = [
  "//tensorflow:internal",
  