Blender Git Loki

Comment out places which are using texture matrix mode for core profile

There is only two places which are using texture matrix mode:

- Tiled tface support.
- Texture shading mode for texture mapping.

Both cases are subject for reconsideration: it is likely that we'll be getting
rid of tface, which means game properties like tiles needs to be revisited
anyway. As for texture shading it is using basic shader which is also not
supported by core profile anyway.