Update app.py

Removed requests import

app.py

@@ -25,7 +25,6 @@ def get_web_search_results(query: str)-> str: #it's import to specify the return
     Args:
         query: A string representing a valid web query. IMPORTANT: Follow type str format strictly e.g. 'pictures of cats'.
     """
-    import requests
     search_results_tool = DuckDuckGoSearchTool()
     try:
         results = search_results_tool(query)