drm/amd/display: Remove unused display_content_support

This was never filled in and thus never truly used.

Checking the EDID for content_type support is not required for sending
the avi infoframe packet.

v2:
- rebase to amd-staging-drm-next
Reviewed-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Joshua Ashton <joshua@froggi.es>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -188,7 +188,6 @@ struct dc_stream_state {
 	struct link_encoder *link_enc;
 	struct dc_stream_debug_options debug;
 	struct dc_panel_patch sink_patches;
-	union display_content_support content_support;
 	struct dc_crtc_timing timing;
 	struct dc_crtc_timing_adjust adjust;
 	struct dc_info_packet vrr_infopacket;

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

@@ -163,18 +163,6 @@ struct dc_edid {
 
 #define AUDIO_INFO_DISPLAY_NAME_SIZE_IN_CHARS 20
 
-union display_content_support {
-	unsigned int raw;
-	struct {
-		unsigned int valid_content_type :1;
-		unsigned int game_content :1;
-		unsigned int cinema_content :1;
-		unsigned int photo_content :1;
-		unsigned int graphics_content :1;
-		unsigned int reserved :27;
-	} bits;
-};
-
 struct dc_panel_patch {
 	unsigned int dppowerup_delay;
 	unsigned int extra_t12_ms;
@@ -207,8 +195,6 @@ struct dc_edid_caps {
 	uint32_t audio_latency;
 	uint32_t video_latency;
 
-	union display_content_support content_support;
-
 	uint8_t qs_bit;
 	uint8_t qy_bit;