Update azure-communication-services-azure-cognitive-services-integration.md

remove duplicate ms.custom tag

Author: valindrae

articles/communication-services/concepts/call-automation/azure-communication-services-azure-cognitive-services-integration.md

@@ -8,7 +8,6 @@ ms.subservice: call-automation
 ms.topic: include
 ms.date: 02/15/2023
 ms.author: kpunjabi
-ms.custom: private_preview
 ms.custom: references_regions
 services: azure-communication-services
 ---