Removed preview banner; topic is GA

Author: phecke

powerapps-docs/developer/model-driven-apps/clientapi/reference/Xrm-App/clearGlobalNotification.md

@@ -13,13 +13,8 @@ search.app:
 ---
 # clearGlobalNotification (Client API reference)
 
-[This topic is pre-release documentation and is subject to change.]
-
 [!INCLUDE[./includes/clearGlobalNotification-description.md](./includes/clearGlobalNotification-description.md)]
 
-> [!NOTE]
-> This is a preview feature, and is supported only on Unified Interface.
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 ## Syntax
 
 `Xrm.App.clearGlobalNotification(uniqueId).then(successCallback, errorCallback);`