Update app.py

app.py

@@ -6,7 +6,7 @@ import pandas as pd
 import ast
 import operator
 from typing import List, Dict, Any, Optional, Annotated
-from langgraph.graph import Graph, StateGraph, State
+from langgraph.graph import Graph, StateGraph
 from langgraph.prebuilt import ToolNode
 from tools import simple_search
 from huggingface_hub import InferenceClient