removed bad links

Author: Justinha

articles/active-directory/authentication/howto-mfa-nps-extension.md

@@ -106,10 +106,6 @@ When you install the extension, you need the *Tenant ID* and admin credentials f
 
 The NPS server must be able to communicate with the following URLs over TCP port 443:
 
-* `https:\//strongauthenticationservice.auth.microsoft.com` (for Azure Public cloud customers).
-* `https:\//strongauthenticationservice.auth.microsoft.us` (for Azure Government customers).
-* `https:\//strongauthenticationservice.auth.microsoft.cn` (for Azure China 21Vianet customers). 
-* `https:\//adnotifications.windowsazure.com`
 * `https:\//login.microsoftonline.com`
 * `https:\//credentials.azure.com`