ci: make ci happy lint the code, delete unused imports

Signed-off-by: yihong0618 <zouzou0208@gmail.com>

pilot/model/base.py

@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
-from typing import List, TypedDict
+from typing import TypedDict
+
 
 class Message(TypedDict):
-    """LLM Message object containing usually like (role: content) """
+    """LLM Message object containing usually like (role: content)"""
 
     role: str
     content: str
-