Ao proxies removal (#1678) * Remove aoproxies ambient occlusion, it never looked too right and it's stupid to have artists authoring them manually, almost no one did I still think SDF AO works better than SSAO in most cases, but they should live as a renderhook and artists don't need to touch anything, the way it is now is very hard to maintain, it could be 10x simpler * Remove sdf.hlsl (until we meet again 🫡 )