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 <>
Reviewed-by: Bas Nieuwenhuizen <>
Reviewed-by: Marek Olšák <>
Part-of: <!10036>
127 jobs for !10036 with aco_acnir_tg4_trunc in 32 minutes and 57 seconds (queued for 7 seconds)
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