Remove unused import

Author: sd109

web-apps/chat/app.py

@@ -5,7 +5,7 @@
 from urllib.parse import urljoin
 from langchain.schema import HumanMessage, AIMessage, SystemMessage
 from langchain_openai import ChatOpenAI
-from typing import Dict, List
+from typing import Dict
 from pydantic import BaseModel, ConfigDict
 
 log = utils.get_logger()