mus: Remove the old client lib.

services/ui/public/cpp/tests/test_window.h

-// Copyright 2015 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.
-
-#ifndef SERVICES_UI_PUBLIC_CPP_TESTS_TEST_WINDOW_H_
-#define SERVICES_UI_PUBLIC_CPP_TESTS_TEST_WINDOW_H_
-
-#include "base/macros.h"
-#include "services/ui/public/cpp/window.h"
-#include "services/ui/public/cpp/window_private.h"
-
-namespace ui {
-
-// Subclass with public ctor/dtor.
-class TestWindow : public Window {
- public:
-  TestWindow() { WindowPrivate(this).set_server_id(1); }
-  explicit TestWindow(Id window_id) {
-    WindowPrivate(this).set_server_id(window_id);
-  }
-  ~TestWindow() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestWindow);
-};
-
-}  // namespace ui
-
-#endif  // SERVICES_UI_PUBLIC_CPP_TESTS_TEST_WINDOW_H_