drm/amd/display/modules/hdcp/hdcp_psp: Remove unused function...

drm/amd/display/modules/hdcp/hdcp_psp: Remove unused function 'mod_hdcp_hdcp1_get_link_encryption_status()'

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

 drivers/gpu/drm/amd/amdgpu/../display/modules/hdcp/hdcp_psp.c:374:22: warning: no previous prototype for ‘mod_hdcp_hdcp1_get_link_encryption_status’ [-Wmissing-prototypes]

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/modules/hdcp/hdcp_psp.c

@@ -371,19 +371,6 @@ enum mod_hdcp_status mod_hdcp_hdcp1_link_maintenance(struct mod_hdcp *hdcp)
 	return status;
 }
 
-enum mod_hdcp_status mod_hdcp_hdcp1_get_link_encryption_status(struct mod_hdcp *hdcp,
-							       enum mod_hdcp_encryption_status *encryption_status)
-{
-	*encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;
-
-	if (mod_hdcp_hdcp1_link_maintenance(hdcp) != MOD_HDCP_STATUS_SUCCESS)
-		return MOD_HDCP_STATUS_FAILURE;
-
-	*encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP1_ON;
-
-	return MOD_HDCP_STATUS_SUCCESS;
-}
-
 enum mod_hdcp_status mod_hdcp_hdcp2_create_session(struct mod_hdcp *hdcp)
 {
 	struct psp_context *psp = hdcp->config.psp.handle;