remove old chain

Author: vbarda

backend/chain.py

@@ -1,10 +1,10 @@
 """Main entrypoint for the app."""
+# TODO (VB): delete this completely & test feedback + tracing in langgraph deploy
 import asyncio
 from typing import Optional, Union
 from uuid import UUID
 
 import langsmith
-from chain import ChatRequest, answer_chain
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from langserve import add_routes
@@ -24,15 +24,6 @@
 )
 
 
-add_routes(
-    app,
-    answer_chain,
-    path="/chat",
-    input_type=ChatRequest,
-    config_keys=["metadata", "configurable", "tags"],
-)
-
-
 class SendFeedbackBody(BaseModel):
     run_id: UUID
     key: str = "user_score"