Revert "Added PlayerRoles and Classes"

This reverts commit 447b2966752beddc5eda7c63e1b20c97d55ad93a.
Revert "Started work on new UI system"

This reverts commit 63b377f0b28c3b15342f6322c83bb43217fade98.

Conflicts:
	Assets/Scripts/AmmoGUI.cs
	Assets/Scripts/AmmoGUI.cs.meta