Remove old wtf/ directory.

third_party/WebKit/Source/wtf/Dummy.cpp

Index: third_party/WebKit/Source/wtf/Dummy.cpp
diff --git a/third_party/WebKit/Source/wtf/Dummy.cpp b/third_party/WebKit/Source/wtf/Dummy.cpp
deleted file mode 100644
index cb095313165ac2582685b63afb2f892bddb206ca..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/wtf/Dummy.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2017 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Now that all .cpp files are gone for target "wtf". However, this seems to
-// trigger a compile error on Mac. This file gives an empty object file and
-// should make Xcode's libtool happy...
-
-// And also, MSVC seems to fail to build a .lib file for wtf.dll if there is
-// no symbol to export.
-
-#include "wtf/build_config.h"
-
-#if OS(WIN)
-
-namespace WTF {
-
-__declspec(
-    dllexport) int g_dummy_exported_value_to_force_msvc_to_generate_lib_file;
-}
-
-#endif