Revert "TexScatter: Contact Occlusion (with some issues)"

This reverts commit 1db5928ecc0e57aa109c2a6b16ccc1567dcaecde.
Revert "TexScatter: v0.5 of Contact Occlusion"

This reverts commit f926dec926430bc306bf0c5b3c3e04cccd90f55c.