message: Remove extra warnings from signature_def_util
diff: # Utilities for signature_defs in TFLite
  load("//tensorflow:tensorflow.bzl", "pybind_extension")
  -load("//tensorflow/lite:build_def.bzl", "tflite_copts", "tflite_copts_warnings")
  +load("//tensorflow/lite:build_def.bzl", "tflite_copts")
  load("//tensorflow/lite:special_rules.bzl", "tflite_portable_test_suite")
  package(
  @@ -14,7 +14,7 @@ cc_library(
  name = "signature_def_util",
  srcs = ["signature_def_util.cc"],
  hdrs = ["signature_def_util.h"],
  - copts = tflite_copts() + tflite_copts_warnings(),
  + copts = tflite_copts(),
  deps = [
  "//tensorflow/core:lib_proto_parsing",
  "//tensorflow/core:protos_all_cc",
  