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

third_party/protobuf/objectivec/google/protobuf/Empty.pbobjc.h

Index: third_party/protobuf/objectivec/google/protobuf/Empty.pbobjc.h
diff --git a/third_party/protobuf/objectivec/google/protobuf/Empty.pbobjc.h b/third_party/protobuf/objectivec/google/protobuf/Empty.pbobjc.h
deleted file mode 100644
index 17e2b19babe8cb3393234df97a729d3c10fb861d..0000000000000000000000000000000000000000
--- a/third_party/protobuf/objectivec/google/protobuf/Empty.pbobjc.h
+++ /dev/null
@@ -1,44 +0,0 @@
-// Generated by the protocol buffer compiler.  DO NOT EDIT!
-// source: google/protobuf/empty.proto
-
-#import "GPBProtocolBuffers.h"
-
-#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30000
-#error This file was generated by a different version of protoc-gen-objc which is incompatible with your Protocol Buffer sources.
-#endif
-
-// @@protoc_insertion_point(imports)
-
-CF_EXTERN_C_BEGIN
-
-NS_ASSUME_NONNULL_BEGIN
-
-#pragma mark - GPBEmptyRoot
-
-@interface GPBEmptyRoot : GPBRootObject
-
-// The base class provides:
-//   + (GPBExtensionRegistry *)extensionRegistry;
-// which is an GPBExtensionRegistry that includes all the extensions defined by
-// this file and all files that it depends on.
-
-@end
-
-#pragma mark - GPBEmpty
-
-// A generic empty message that you can re-use to avoid defining duplicated
-// empty messages in your APIs. A typical example is to use it as the request
-// or the response type of an API method. For instance:
-//
-//     service Foo {
-//       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
-//     }
-@interface GPBEmpty : GPBMessage
-
-@end
-
-NS_ASSUME_NONNULL_END
-
-CF_EXTERN_C_END
-
-// @@protoc_insertion_point(global_scope)