Remove empty block under JS/Python

Author: JialinXin

articles/azure-web-pubsub/tutorial-serverless-notification.md

@@ -438,8 +438,6 @@ In this tutorial, you learn how to:
     </html>
     ```
 
-    # [JavaScript](#tab/javascript)
-
     # [C#](#tab/csharp)
     Since C# project will compile files to a different output folder, you need to update your `*.csproj` to make the content page go with it.
     ```xml
@@ -450,8 +448,6 @@ In this tutorial, you learn how to:
     </ItemGroup>
     ```
 
-    # [Python](#tab/python)
-
 7. Configure and run the Azure Function app
 
     - In the browser, open the **Azure portal** and confirm the Web PubSub Service instance you deployed earlier was successfully created. Navigate to the instance.