This reverts commit 796d6a37.

4K144 resolution isn't available on DCN31.
Reviewed-by: NSherry Wang <Yao.Wang1@amd.com>
Acked-by: NHamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: NAric Cyr <aric.cyr@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>