Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h

Index: third_party/protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h
diff --git a/third_party/protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h b/third_party/protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h
deleted file mode 100644
index fea75b93bc2568353567eefaaf33d82c653f48ee..0000000000000000000000000000000000000000
--- a/third_party/protobuf/objectivec/GPBProtocolBuffers_RuntimeSupport.h
+++ /dev/null
@@ -1,40 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// This header is meant to only be used by the generated source, it should not
-// be included in code using protocol buffers.
-
-#import "GPBProtocolBuffers.h"
-
-#import "GPBDescriptor_PackagePrivate.h"
-#import "GPBExtensionInternals.h"
-#import "GPBMessage_PackagePrivate.h"
-#import "GPBRootObject_PackagePrivate.h"
-#import "GPBUtilities_PackagePrivate.h"