Remove excessive rate limiting.

app.py

@@ -116,8 +116,6 @@ async def answer_question(agent, item, answers_payload, results_log):
     try:
         submitted_answer = await agent.run(question_message)
 
-        # Avoid hitting the Google rate limits. 
-        await asyncio.sleep(60)
         answers_payload.append({"task_id": task_id, "submitted_answer": submitted_answer})
         results_log.append({"Task ID": task_id, "Question": question_text, "Submitted Answer": submitted_answer})
     except Exception as e: