Update number-lookup-sdk.md

removing the PP banner since the service is moving to GA

Author: henikaraa

articles/communication-services/concepts/numbers/number-lookup-sdk.md

@@ -14,8 +14,6 @@ ms.service: azure-communication-services
 
 # Number Lookup SDK overview
 
-[!INCLUDE [Private Preview Notice](../../includes/public-preview-include.md)]
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 Azure Communication Services Number Lookup is part of the Phone Numbers SDK. You can use Number Lookup in your application to check numbers before sending an SMS or placing a call.
 
 ## Number Lookup SDK capabilities