This reverts commit 4ad3ee5ccc77aa3f9d702f7b9ad4d9cfeca6c443. [WHY & HOW] Virtual signal is not supported as audio capable by DC. Reviewed-by: Chao-kai Wang <stylon.wang@amd.com> Acked-by: Roman Li <roman.li@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>