Removed unnecessary stuff, fixed desktop mode collider size

removed unnecessary assets so the page should load faster and use less ram. I also fixed the desktop mode fallback so that the collider is the normal height if your browser doesn't do the vr thing. There is a keybind for switching to desktop mode that *should* work it is F7. there are probably still lots of bugs with the current codebase, if you have weird behaviors please feel free to tell me about it and i'll fix it asap. 

more features are coming *very* soon :D