Merge pull request #291603 from cn0151/cnwankwo/togetherMode_to_GA

promote together mode to GA

Author: prmerger-automator[bot]

articles/communication-services/how-tos/calling-sdk/together-mode.md

@@ -17,13 +17,6 @@ This article describes how to implement Microsoft Teams Together Mode with Azure
 
 [!INCLUDE [Public Preview Disclaimer](../../includes/public-preview-include-document.md)]
 
-## Prerequisites
-
-- An Azure account with an active subscription. [Create an account for free](https://azure.microsoft.com/free/?WT.mc_id=A261C142F). 
-- A deployed Communication Services resource. [Create a Communication Services resource](../../quickstarts/create-communication-resource.md).
-- A user's access token to enable the calling client. For more information, see [Create and manage access tokens](../../quickstarts/identity/access-tokens.md).
-- Optional: Complete the quickstart to [add voice calling to your application](../../quickstarts/voice-video-calling/getting-started-with-calling.md)
-
 ## Support
 The following tables define support for Together Mode in Azure Communication Services.