removing the non-existent placeholder

Author: spelluru

articles/event-grid/event-grid-dotnet-get-started-pull-delivery.md

@@ -80,7 +80,7 @@ This section shows you how to create a .NET console application to send messages
 1. Replace the contents of `Program.cs` with the following code. The important steps are outlined,  with additional information in the code comments.
 
     > [!IMPORTANT]
-    > Update placeholder values (`<NAMESPACE-ENDPOINT>` , `<TOPIC-NAME>`, `<TOPIC-ACCESS-KEY>`, `<TOPIC-SUBSCRIPTION-NAME>`) in the code snippet with your namespace endpoint, topic name, and topic key.
+    > Update placeholder values (`<NAMESPACE-ENDPOINT>` , `<TOPIC-NAME>`, `<TOPIC-ACCESS-KEY>`) in the code snippet with your namespace endpoint, topic name, and topic key.
 
     ```csharp
     using Azure.Messaging;
@@ -328,4 +328,4 @@ In this section, you add code to retrieve messages from the queue.
 Navigate to your Event Grid namespace in the Azure portal, and select **Delete** on the Azure portal to delete the Event Grid namespace and the topic in it.
 
 ## Related topics
-See [.NET API reference](/dotnet/api/overview/azure/messaging.eventgrid-readme?view=azure-dotnet-preview&preserve-view=true).
+See [.NET API reference](/dotnet/api/overview/azure/messaging.eventgrid-readme?view=azure-dotnet-preview&preserve-view=true).