drm/amdgpu: skip gds ras workaround for aldebaran

there won't be any gds useage in either kernel or
pm4 anymore for aldebaran.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>