Remove apparently-unused import torchvision in model.py (#1305)

Co-authored-by: vmpuri <[email protected]>

Author: swolchok

torchchat/model.py

@@ -12,8 +12,6 @@
 from enum import Enum
 from pathlib import Path
 
-import torchvision
-
 from typing import Any, Callable, Dict, Optional, Union
 from collections.abc import Hashable