drm/amdgpu: remove the DID of Vangogh from pciidlist

change the vangogh family to use IP discovery path to initialize IP
list, this needs to remove the DID from the PCI ID list to allow the IP
discovery path to set all the IP versions correctly.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>