[fbsync] Remove unused import (#7245)

Reviewed By: vmoens

Differential Revision: D44416604

fbshipit-source-id: 6f3c9d29c6c6599ba2ccc42e05de801b63e4ee9a

Author: NicolasHug

torchvision/datasets/vision.py

@@ -1,7 +1,6 @@
 import os
 from typing import Any, Callable, List, Optional, Tuple
 
-import torch
 import torch.utils.data as data
 
 from ..utils import _log_api_usage_once