Add a TODO, remove unnecessary comments

Author: AnatoliB

samples-v2/openai_agents/function_app.py

@@ -3,7 +3,6 @@
 
 app = func.FunctionApp(http_auth_level=func.AuthLevel.FUNCTION)
 
-# An HTTP-Triggered Function with a Durable Functions Client binding
 @app.route(route="orchestrators/{functionName}")
 @app.durable_client_input(client_name="client")
 async def hello_orchestration_starter(req: func.HttpRequest, client):
@@ -21,7 +20,10 @@ def basic_hello_world_orchestrator(context):
 # Activity for OpenAI agent execution
 @app.activity_trigger(input_name="input")
 async def openai_agent_activity(input: str):
-    # Import and call the main function from basic/hello_world.py
+    # TODO: Instead of wrapping this code in an activity function like this,
+    # we should be able to invoke it from the orchestrator directly.
+    # In order to enable this, Runner.run invocations should be implicitly
+    # wrapped in activity invocations. 
     from basic.hello_world import main
     result = await main()
     return result