examples: fix simple-chatbot

examples/simple-chatbot/server.py

@@ -2,15 +2,12 @@ import os
 import argparse
 import subprocess
 import atexit
-from pathlib import Path
-from typing import Optional
 
 from fastapi import FastAPI, Request, HTTPException
 from fastapi.middleware.cors import CORSMiddleware
-from fastapi.staticfiles import StaticFiles
-from fastapi.responses import FileResponse, JSONResponse, RedirectResponse
+from fastapi.responses import JSONResponse, RedirectResponse
 
-from utils.daily_helpers import create_room as _create_room, get_token, get_name_from_url
+from utils.daily_helpers import create_room as _create_room, get_token
 
 MAX_BOTS_PER_ROOM = 1