Update default-outbound-access.md

Update for Private Subnet GA

Author: brianlehr

articles/virtual-network/ip-services/default-outbound-access.md

@@ -62,13 +62,8 @@ Some examples of configurations that won't work when using default outbound acce
 
 There are multiple ways to turn off default outbound access. The following sections describe the options available to you.
 
-### Utilize the Private Subnet parameter (public preview)
+### Utilize the Private Subnet parameter
 
-> [!IMPORTANT]
-> Private Subnets are currently in public preview.
-> This preview version is provided without a service level agreement, and it's not recommended for production workloads. Certain features might not be supported or might have constrained capabilities. 
-> For more information, see [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/).
- 
 * Creating a subnet to be Private prevents any virtual machines on the subnet from utilizing default outbound access to connect to public endpoints.
 
 * VMs on a Private subnet can still access the Internet using explicit outbound connectivity.