Remove some unused ASIC check logic.
Remove some definition of amdgpu_device which only used by
the removed ASIC check logic.(V2)
Signed-off-by: NLikun Gao <Likun.Gao@amd.com>
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>