drm/amdgpu: drop redundant cancel_delayed_work_sync call

As those _sw_fini() APIs follow just after _suspend() APIs.
And the cancel_delayed_work_sync was already called in latter.

Signed-off-by: Evan Quan <[e-mail]>
Reviewed-by: Guchun Chen <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

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

···
 {
 	int i;
 
-	cancel_delayed_work_sync(&adev->jpeg.idle_work);
-
 	for (i = 0; i < adev->jpeg.num_jpeg_inst; ++i) {
 		if (adev->jpeg.harvest_config & (1 << i))
 			continue;

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

···
 {
 	int i, j;
 
-	cancel_delayed_work_sync(&adev->uvd.idle_work);
 	drm_sched_entity_destroy(&adev->uvd.entity);
 
 	for (j = 0; j < adev->uvd.num_uvd_inst; ++j) {

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

···
 	if (adev->vce.vcpu_bo == NULL)
 		return 0;
 
-	cancel_delayed_work_sync(&adev->vce.idle_work);
 	drm_sched_entity_destroy(&adev->vce.entity);
 
 	amdgpu_bo_free_kernel(&adev->vce.vcpu_bo, &adev->vce.gpu_addr,

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

···
 {
 	int i, j;
 
-	cancel_delayed_work_sync(&adev->vcn.idle_work);
-
 	for (j = 0; j < adev->vcn.num_vcn_inst; ++j) {
 		if (adev->vcn.harvest_config & (1 << j))
 			continue;