[cleanup] Drop empty header file

Bug: v8:10933
Change-Id: I33aad48c65292fa4e886c4485518735bc5926fdf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2435647
Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70188}

src/builtins/builtins-object-gen.cc

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "src/builtins/builtins-object-gen.h"
-
 #include "src/builtins/builtins-utils-gen.h"
 #include "src/builtins/builtins.h"
 #include "src/codegen/code-stub-assembler.h"

src/builtins/builtins-object-gen.h

-// Copyright 2018 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_BUILTINS_BUILTINS_OBJECT_GEN_H_
-#define V8_BUILTINS_BUILTINS_OBJECT_GEN_H_
-
-#include "src/codegen/code-stub-assembler.h"
-
-namespace v8 {
-namespace internal {}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_BUILTINS_BUILTINS_OBJECT_GEN_H_