drm/amdgpu: remove unused struct 'hqd_registers'

'hqd_registers' used to be used in a member of the 'bonaire_mqd'
struct. 'bonaire_mqd' was removed by
commit 486d807c ("drm/amdgpu: remove duplicate definition of cik_mqd")
It's now unused.

Remove 'hqd_registers' as well.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c

@@ -2755,44 +2755,6 @@ static int gfx_v7_0_mec_init(struct amdgpu_device *adev)
 	return 0;
 }
 
-struct hqd_registers {
-	u32 cp_mqd_base_addr;
-	u32 cp_mqd_base_addr_hi;
-	u32 cp_hqd_active;
-	u32 cp_hqd_vmid;
-	u32 cp_hqd_persistent_state;
-	u32 cp_hqd_pipe_priority;
-	u32 cp_hqd_queue_priority;
-	u32 cp_hqd_quantum;
-	u32 cp_hqd_pq_base;
-	u32 cp_hqd_pq_base_hi;
-	u32 cp_hqd_pq_rptr;
-	u32 cp_hqd_pq_rptr_report_addr;
-	u32 cp_hqd_pq_rptr_report_addr_hi;
-	u32 cp_hqd_pq_wptr_poll_addr;
-	u32 cp_hqd_pq_wptr_poll_addr_hi;
-	u32 cp_hqd_pq_doorbell_control;
-	u32 cp_hqd_pq_wptr;
-	u32 cp_hqd_pq_control;
-	u32 cp_hqd_ib_base_addr;
-	u32 cp_hqd_ib_base_addr_hi;
-	u32 cp_hqd_ib_rptr;
-	u32 cp_hqd_ib_control;
-	u32 cp_hqd_iq_timer;
-	u32 cp_hqd_iq_rptr;
-	u32 cp_hqd_dequeue_request;
-	u32 cp_hqd_dma_offload;
-	u32 cp_hqd_sema_cmd;
-	u32 cp_hqd_msg_type;
-	u32 cp_hqd_atomic0_preop_lo;
-	u32 cp_hqd_atomic0_preop_hi;
-	u32 cp_hqd_atomic1_preop_lo;
-	u32 cp_hqd_atomic1_preop_hi;
-	u32 cp_hqd_hq_scheduler0;
-	u32 cp_hqd_hq_scheduler1;
-	u32 cp_mqd_control;
-};
-
 static void gfx_v7_0_compute_pipe_init(struct amdgpu_device *adev,
 				       int mec, int pipe)
 {