Remove conflicting files between USP2 -> USP3

Remove conflicting files between USP2 -> USP3

- Fixed an illumination issue with the eyes on the "Ascetic" helmet. (The Halo 3 textures are in the base addon because of the illum for 3 & reach sharing a texture)

- Finished porting gravity hammer animations (melee2 holdtype)
- Better unarmed stand idle & walk animations
- Skeleton renamed/edited entirely, all bones dropped the "frame" in their name.

- Greatly improved armour shaders
- Adjusted shaders on the skin to look less oil-coated and more realistic.
- New head model remade
- Added a blinking facial flex, so the playermodel now blinks
- Eyes repositioned to be less dumb looking
- Proper eye materials
- Added bones for the mandibles
- Added a series of facial flexes to allow customization of facial features using tools such as an extended faceposer, or PAC3.

- Cleaner texture for the councilor helmet
- Not perfect, but a much bette/more fittingr shade of blue for the blue sangheili's head.

next update plans:
== The PAC maker's best friends:
- Mandible bones (may or may not have preanimated movements for voice chat)
- Separate, armour-only mdl within the addons for both Halo 3 & Reach USP
- Arbiter USP Addon.