Remove protos_traits.h

PiperOrigin-RevId: 659536470

protos/BUILD

@@ -44,19 +44,6 @@
 #     ],
 # )
 #
-# # Internally used type traits.
-# cc_library(
-#     name = "protos_traits",
-#     hdrs = [
-#         "protos_traits.h",
-#     ],
-#     copts = UPB_DEFAULT_CPPOPTS,
-#     visibility = ["//visibility:private"],
-#     deps = [
-#         "//hpb:traits",
-#     ],
-# )
-#
 # cc_library(
 #     name = "protos_internal",
 #     hdrs = ["protos_internal.h"],

protos/protos_traits.h

@@ -1,11 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2023 Google LLC.  All rights reserved.
-//
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file or at
-// https://developers.google.com/open-source/licenses/bsd
-
-#ifndef UPB_PROTOS_PROTOS_TRAITS_H_
-#define UPB_PROTOS_PROTOS_TRAITS_H_
-#include "google/protobuf/hpb/traits.h"
-#endif