drm/amdgpu: won't include gc and mmhub register headers in GMC block

All gc/mmhub register access and operation should be in gfxhub/mmhub level.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

@@ -28,8 +28,6 @@
 
 #include "hdp/hdp_5_0_0_offset.h"
 #include "hdp/hdp_5_0_0_sh_mask.h"
-#include "gc/gc_10_1_0_sh_mask.h"
-#include "mmhub/mmhub_2_0_0_sh_mask.h"
 #include "athub/athub_2_0_0_sh_mask.h"
 #include "athub/athub_2_0_0_offset.h"
 #include "dcn/dcn_2_0_0_offset.h"