chore: ruff format

Soulter · Soulter · commit 5c27cf1b30e0 · 2026-04-04T16:31:59.000+08:00
diff --git a/astrbot/dashboard/routes/auth.py b/astrbot/dashboard/routes/auth.py
@@ -1,4 +1,3 @@
-import asyncio
 import datetime
 import secrets
 
