mus: Remove the old client lib.

services/ui/public/cpp/window_private.cc

Index: services/ui/public/cpp/window_private.cc
diff --git a/services/ui/public/cpp/window_private.cc b/services/ui/public/cpp/window_private.cc
deleted file mode 100644
index c8fab1bd2c744c5f2d84aaba7e6f82a1ccab365c..0000000000000000000000000000000000000000
--- a/services/ui/public/cpp/window_private.cc
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2014 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.
-
-#include "services/ui/public/cpp/window_private.h"
-
-namespace ui {
-
-WindowPrivate::WindowPrivate(Window* window) : window_(window) {
-  CHECK(window);
-}
-
-WindowPrivate::~WindowPrivate() {}
-
-// static
-Window* WindowPrivate::LocalCreate() {
-  return new Window;
-}
-
-}  // namespace ui