Revert "radeonsi: set TRUNC_COORD=0 for Total War: WARHAMMER to fix it"
This reverts commit cd12fcff. The terrain looks fine now that TRUNC_COORD=0 for textureGather(). Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Part-of: <!10036>