drm/amd/display: Remove MPC gamut remap logic for DCN30

[Why?]
Should only reroute gamut remap to mpc unless 3D LUT is not used and all
planes are using the same src->dest.

[How?]
Remove DCN30 specific logic for rerouting gamut remap to mpc.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Dillon Varone <dillon.varone@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -1507,36 +1507,6 @@ static void dcn20_update_dchubp_dpp(
 	if (pipe_ctx->update_flags.bits.enable || pipe_ctx->update_flags.bits.opp_changed
 			|| pipe_ctx->stream->update_flags.bits.gamut_remap
 			|| pipe_ctx->stream->update_flags.bits.out_csc) {
-		struct mpc *mpc = pipe_ctx->stream_res.opp->ctx->dc->res_pool->mpc;
-
-		if (mpc->funcs->set_gamut_remap) {
-			int i;
-			int mpcc_id = hubp->inst;
-			struct mpc_grph_gamut_adjustment adjust;
-			bool enable_remap_dpp = false;
-
-			memset(&adjust, 0, sizeof(adjust));
-			adjust.gamut_adjust_type = GRAPHICS_GAMUT_ADJUST_TYPE_BYPASS;
-
-			/* save the enablement of gamut remap for dpp */
-			enable_remap_dpp = pipe_ctx->stream->gamut_remap_matrix.enable_remap;
-
-			/* force bypass gamut remap for dpp/cm */
-			pipe_ctx->stream->gamut_remap_matrix.enable_remap = false;
-			dc->hwss.program_gamut_remap(pipe_ctx);
-
-			/* restore gamut remap flag and use this remap into mpc */
-			pipe_ctx->stream->gamut_remap_matrix.enable_remap = enable_remap_dpp;
-
-			/* build remap matrix for top plane if enabled */
-			if (enable_remap_dpp && pipe_ctx->top_pipe == NULL) {
-					adjust.gamut_adjust_type = GRAPHICS_GAMUT_ADJUST_TYPE_SW;
-					for (i = 0; i < CSC_TEMPERATURE_MATRIX_SIZE; i++)
-						adjust.temperature_matrix[i] =
-								pipe_ctx->stream->gamut_remap_matrix.matrix[i];
-			}
-			mpc->funcs->set_gamut_remap(mpc, mpcc_id, &adjust);
-		} else
 		/* dpp/cm gamut remap*/
 		dc->hwss.program_gamut_remap(pipe_ctx);