WebSocket template does not work

[czyzby]

Since echo.websocket.org is no longer available, the WebSocket template likely doesn't work. As a rather niche feature that can be easily reproduced with the library documentation, I think it should be removed, or updated to use another WebSocket service at the very least.

[czyzby]

Template removed in #69. Closing this issue for now. If anyone wants to add the template back, use the removed file as a starting point, but avoid using gdx-lml modules - focus the usage examples on the WebSocket library itself.