drm/amd/display: Remove unused code

This commit removes some unused code with the required adjustments.
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc.h

@@ -1587,7 +1587,6 @@ struct dc_plane_state *dc_get_surface_for_mpcc(struct dc *dc,
 uint32_t dc_get_opp_for_plane(struct dc *dc, struct dc_plane_state *plane);
 
 void dc_set_disable_128b_132b_stream_overhead(bool disable);
-bool dc_get_disable_128b_132b_stream_overhead(void);
 
 /* The function returns minimum bandwidth required to drive a given timing
  * return - minimum required timing bandwidth in kbps.

drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp.h

@@ -726,4 +726,4 @@ void dpp401_set_cursor_matrix(
 	enum dc_color_space color_space,
 	struct dc_csc_transform cursor_csc_color_matrix);
 
-#endif
+#endif /* __DCN401_DPP_H__ */

drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c

@@ -1261,11 +1261,6 @@ void dc_set_disable_128b_132b_stream_overhead(bool disable)
 	disable_128b_132b_stream_overhead = disable;
 }
 
-bool dc_get_disable_128b_132b_stream_overhead(void)
-{
-	return disable_128b_132b_stream_overhead;
-}
-
 void dc_dsc_get_default_config_option(const struct dc *dc, struct dc_dsc_config_options *options)
 {
 	options->dsc_min_slice_height_override = dc->debug.dsc_min_slice_height_override;

drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.c

@@ -880,12 +880,8 @@ static void dcn401_program_compbuf_segments(struct hubbub *hubbub, unsigned comp
 				+ hubbub2->det3_size + compbuf_size_seg <= hubbub2->crb_size_segs);
 		REG_UPDATE(DCHUBBUB_COMPBUF_CTRL, COMPBUF_SIZE, compbuf_size_seg);
 		hubbub2->compbuf_size_segments = compbuf_size_seg;
-#ifdef DIAGS_BUILD
-		REG_GET(DCHUBBUB_COMPBUF_CTRL, CONFIG_ERROR, &cur_compbuf_size_seg);
-		ASSERT(!cur_compbuf_size_seg);
-#else
+
 		ASSERT(REG_GET(DCHUBBUB_COMPBUF_CTRL, CONFIG_ERROR, &cur_compbuf_size_seg) && !cur_compbuf_size_seg);
-#endif
 	}
 }