Partially reverted 7e9cf13aa3 (#5295)

webapp/client/test_web_client.jsx

@@ -1,7 +0,0 @@
-// Copyright (c) 2017 Mattermost, Inc. All Rights Reserved.
-// See License.txt for license information.
-
-import Client from './client.jsx';
-
-var WebClient = new Client();
-export default WebClient;