drm/amd/display/dc/link/link_detection: Remove unused variable 'status'

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_detection.c: In function ‘query_hdcp_capability’:
 drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_detection.c:501:42: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Wenjing Liu <wenjing.liu@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/link/link_detection.c

@@ -498,8 +498,6 @@ static void query_hdcp_capability(enum signal_type signal, struct dc_link *link)
 	dc_process_hdcp_msg(signal, link, &msg22);
 
 	if (signal == SIGNAL_TYPE_DISPLAY_PORT || signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
-		enum hdcp_message_status status = HDCP_MESSAGE_UNSUPPORTED;
-
 		msg14.data = &link->hdcp_caps.bcaps.raw;
 		msg14.length = sizeof(link->hdcp_caps.bcaps.raw);
 		msg14.msg_id = HDCP_MESSAGE_ID_READ_BCAPS;
@@ -507,7 +505,7 @@ static void query_hdcp_capability(enum signal_type signal, struct dc_link *link)
 		msg14.link = HDCP_LINK_PRIMARY;
 		msg14.max_retries = 5;
 
-		status = dc_process_hdcp_msg(signal, link, &msg14);
+		dc_process_hdcp_msg(signal, link, &msg14);
 	}
 
 }