Lint

backend/app/retrieval.py

@@ -1,13 +1,7 @@
 import json
-from typing import Any
 
 from langchain_core.language_models.base import LanguageModelLike
-from langchain_core.messages import (
-    AIMessage,
-    FunctionMessage,
-    HumanMessage,
-    SystemMessage,
-)
+from langchain_core.messages import AIMessage, HumanMessage, SystemMessage
 from langchain_core.prompts import PromptTemplate
 from langchain_core.retrievers import BaseRetriever
 from langchain_core.runnables import chain