drm/bochs: remove the default ttm_tt_populate callbacks

TTM calls the default implementation now.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/bochs/bochs_mm.c

@@ -196,8 +196,6 @@ static struct ttm_tt *bochs_ttm_tt_create(struct ttm_bo_device *bdev,
 
 struct ttm_bo_driver bochs_bo_driver = {
 	.ttm_tt_create = bochs_ttm_tt_create,
-	.ttm_tt_populate = ttm_pool_populate,
-	.ttm_tt_unpopulate = ttm_pool_unpopulate,
 	.init_mem_type = bochs_bo_init_mem_type,
 	.eviction_valuable = ttm_bo_eviction_valuable,
 	.evict_flags = bochs_bo_evict_flags,