refactor: remove unused imports in files.py

Signed-off-by: kang2453 <[email protected]>

Author: kang2453

src/spaceone/file_manager/interface/rest/files.py

@@ -1,6 +1,5 @@
 from curses import meta
 import logging
-from turtle import down
 
 from fastapi import Request, Depends, File, UploadFile
 from fastapi.responses import StreamingResponse