drm/amdgpu: delete unused struct member suspend from amdgpu_device

Signed-off-by: Nils Wallménius <nils.wallmenius@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1903,7 +1903,6 @@ struct amdgpu_device {
 	int				usec_timeout;
 	const struct amdgpu_asic_funcs	*asic_funcs;
 	bool				shutdown;
-	bool				suspend;
 	bool				need_dma32;
 	bool				accel_working;
 	struct work_struct 		reset_work;