drm/amd/pm: Remove BACO check for aldebaran

BACO/MACO is not applicable for aldebaran. Remove the redundant check.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>