Removing ultra info

Author: roygara

includes/virtual-machines-disks-encryption-regions.md

@@ -19,12 +19,4 @@ For premium SSDs, standard SSDs, and standard HDDs, only the following regions c
 For ultra disks, the following regions support customer-managed keys as a GA offering:
 
 - East US
-- West US 2
-
-The following regions support customer-managed keys for ultra disks as a preview offering:
-
-- East US 2
-- South Central US
-- Canada Central
-- UK South
-- North Europe
+- West US 2