drm/radeon: remove radeon_bo_clear_va

Won't work anyway, instead WARN_ON if the VA list isn't
empty when we free the BO.

Signed-off-by: Christian König <[e-mail]>
Tested-by: Michel Dänzer <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/radeon/radeon_object.c

···
  * function are calling it.
  */
 
-static void radeon_bo_clear_va(struct radeon_bo *bo)
-{
-	struct radeon_bo_va *bo_va, *tmp;
-
-	list_for_each_entry_safe(bo_va, tmp, &bo->va, bo_list) {
-		/* remove from all vm address space */
-		radeon_vm_bo_rmv(bo->rdev, bo_va);
-	}
-}
-
 static void radeon_update_memory_usage(struct radeon_bo *bo,
 				       unsigned mem_type, int sign)
 {
···
 	list_del_init(&bo->list);
 	mutex_unlock(&bo->rdev->gem.mutex);
 	radeon_bo_clear_surface_reg(bo);
-	radeon_bo_clear_va(bo);
+	WARN_ON(!list_empty(&bo->va));
 	drm_gem_object_release(&bo->gem_base);
 	kfree(bo);
 }