Update cross-tenant-mailbox-migration.md

Removed Domain sharing Note as it is not available ATM

Fixes https://github.com/MicrosoftDocs/microsoft-365-docs/issues/12904

Author: msbemba

microsoft-365/enterprise/cross-tenant-mailbox-migration.md

@@ -40,9 +40,6 @@ This article describes the process for cross-tenant mailbox moves and provides g
 
 When a mailbox is migrated cross-tenant with this feature, only user-visible content in the mailbox (email, contacts, calendar, tasks, and notes) is migrated to the target (destination tenant). After a successful migration, the source mailbox is deleted. This deletion means that after migration, under no circumstances is the source mailbox available, discoverable, or accessible in the source tenant.
 
-> [!NOTE]
-> If you are interested in previewing our new feature **Domain Sharing for email** alongside your cross-tenant mailbox migrations, complete the form at [aka.ms/domainsharingpreview](https://aka.ms/domainsharingpreview). The **Domain sharing for email** feature enables users in separate Microsoft 365 tenants to send and receive email using addresses from the same custom domain. The feature is intended to solve scenarios where users in separate tenants need to represent a common corporate brand in their email addresses. The current preview supports sharing domains indefinitely and shared domains during cross-tenant mailbox migration coexistence.
-
 ## Licensing
 
 > [!IMPORTANT]