Update capacity-reservation-associate-virtual-machine-scale-set.md

Registering for CR is no longer required.

Author: vargupt

articles/virtual-machines/capacity-reservation-associate-virtual-machine-scale-set.md

@@ -24,9 +24,6 @@ To learn more about these modes, go to [Virtual Machine Scale Sets Orchestration
 > This preview version is provided without a service-level agreement, and we don't recommend it for production workloads. Certain features might not be supported or might have constrained capabilities. 
 > For more information, see [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/).
 
-## Register for Capacity Reservation 
-
-Before you can use the Capacity Reservation feature, you must [register your subscription for the preview](capacity-reservation-overview.md#register-for-capacity-reservation). The registration may take several minutes to complete. You can use either Azure CLI or PowerShell to complete the feature registration.
 
 ## Limitations of scale sets in Uniform Orchestration