Update agent.py

agent.py

@@ -6,10 +6,8 @@ import json
 import re
 import requests
 import tempfile
-from youtube_transcript_api import YouTubeTranscriptApi
 from typing import TypedDict, Annotated, Sequence, Union
 from langgraph.graph import StateGraph, END
-from langchain_community.tools import DuckDuckGoSearchResults
 from langchain_community.utilities import WikipediaAPIWrapper
 from langchain_community.tools import WikipediaQueryRun
 from langchain_core.messages import BaseMessage, HumanMessage, SystemMessage, ToolMessage