freedreno/a6xx: remove astc_srgb workaround

Not used on a6xx, so remove some of the related plumbing that was copied
over from older gens.

Signed-off-by: Rob Clark <robdclark@gmail.com>

src/gallium/drivers/freedreno/a6xx/fd6_context.h

 	 */
 	uint16_t fsaturate_s, fsaturate_t, fsaturate_r;
 
-	/* bitmask of samplers which need astc srgb workaround: */
-	uint16_t vastc_srgb, fastc_srgb;
-
 	/* some state changes require a different shader variant.  Keep
 	 * track of this so we know when we need to re-emit shader state
 	 * due to variant change.  See fixup_shader_state()

src/gallium/drivers/freedreno/a6xx/fd6_draw.c

 				.fclamp_color = ctx->rasterizer->clamp_fragment_color,
 				.rasterflat = ctx->rasterizer->flatshade,
 				.ucp_enables = ctx->rasterizer->clip_plane_enable,
-				.has_per_samp = (fd6_ctx->fsaturate || fd6_ctx->vsaturate ||
-						fd6_ctx->fastc_srgb || fd6_ctx->vastc_srgb),
+				.has_per_samp = (fd6_ctx->fsaturate || fd6_ctx->vsaturate),
 				.vsaturate_s = fd6_ctx->vsaturate_s,
 				.vsaturate_t = fd6_ctx->vsaturate_t,
 				.vsaturate_r = fd6_ctx->vsaturate_r,
 				.fsaturate_s = fd6_ctx->fsaturate_s,
 				.fsaturate_t = fd6_ctx->fsaturate_t,
 				.fsaturate_r = fd6_ctx->fsaturate_r,
-				.vastc_srgb = fd6_ctx->vastc_srgb,
-				.fastc_srgb = fd6_ctx->fastc_srgb,
 				.vsamples = ctx->tex[PIPE_SHADER_VERTEX].samples,
 				.fsamples = ctx->tex[PIPE_SHADER_FRAGMENT].samples,
 			}

src/gallium/drivers/freedreno/a6xx/fd6_texture.c

 	}
 }
 
-static bool
-use_astc_srgb_workaround(struct pipe_context *pctx, enum pipe_format format)
-{
-	return false;  // TODO check if this is still needed on a5xx
-}
-
 static struct pipe_sampler_view *
 fd6_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
 		const struct pipe_sampler_view *cso)
 				cso->swizzle_b, cso->swizzle_a);
 
 	if (util_format_is_srgb(format)) {
-		if (use_astc_srgb_workaround(pctx, format))
-			so->astc_srgb = true;
 		so->texconst0 |= A6XX_TEX_CONST_0_SRGB;
 	}
 
 	free(view);
 }
 
-static void
-fd6_set_sampler_views(struct pipe_context *pctx, enum pipe_shader_type shader,
-		unsigned start, unsigned nr,
-		struct pipe_sampler_view **views)
-{
-	struct fd_context *ctx = fd_context(pctx);
-	struct fd6_context *fd6_ctx = fd6_context(ctx);
-	uint16_t astc_srgb = 0;
-	unsigned i;
-
-	for (i = 0; i < nr; i++) {
-		if (views[i]) {
-			struct fd6_pipe_sampler_view *view =
-					fd6_pipe_sampler_view(views[i]);
-			if (view->astc_srgb)
-				astc_srgb |= (1 << i);
-		}
-	}
-
-	fd_set_sampler_views(pctx, shader, start, nr, views);
-
-	if (shader == PIPE_SHADER_FRAGMENT) {
-		fd6_ctx->fastc_srgb = astc_srgb;
-	} else if (shader == PIPE_SHADER_VERTEX) {
-		fd6_ctx->vastc_srgb = astc_srgb;
-	}
-}
-
 
 static uint32_t
 key_hash(const void *_key)
 
 	pctx->create_sampler_view = fd6_sampler_view_create;
 	pctx->sampler_view_destroy = fd6_sampler_view_destroy;
-	pctx->set_sampler_views = fd6_set_sampler_views;
+	pctx->set_sampler_views = fd_set_sampler_views;
 
 	fd6_ctx->tex_cache = _mesa_hash_table_create(NULL, key_hash, key_equals);
 }

src/gallium/drivers/freedreno/a6xx/fd6_texture.h

 	uint32_t texconst0, texconst1, texconst2, texconst3, texconst5;
 	uint32_t texconst6, texconst7, texconst8, texconst9, texconst10, texconst11;
 	uint32_t offset;
-	bool astc_srgb;
 	uint16_t seqno;
 	bool ubwc_enabled;
 };