Update app.py

commented unused websearch tool import

app.py

@@ -15,7 +15,7 @@ import math
 import requests
 from urllib.parse import quote
 from multiprocessing import context
-from agents.tool import WebSearchTool
+# from agents.tool import WebSearchTool
 from typing_extensions import TypedDict, Any
 from agents import Agent, FunctionTool, ImageGenerationTool, RunContextWrapper,  Runner, function_tool, SQLiteSession
 from markdown_pdf import MarkdownPdf