remove lock arc resource bridge

It is NOT recommended to lock Arc resource bridge. This prevents upgrade!

Author: alt-key

azure-local/upgrade/install-solution-upgrade.md

@@ -132,7 +132,7 @@ Follow these steps to verify that the upgrade was successful:
 After the solution upgrade is complete, you may need to perform additional tasks to secure your system and ensure it's ready for workloads.
 
 - You may need to connect to the system via Remote Desktop Protocol (RDP) to deploy workloads. For more information, see [Enable RDP](../deploy/deploy-via-portal.md#enable-rdp).
-- To prevent the accidental deletion of resources, you can lock resources. We recommend that you lock the Arc Resource Bridge. For more information, see [Lock Arc Resource Bridge](../deploy/deploy-via-portal.md#lock-arc-resource-bridge).
+- To prevent the accidental deletion of resources, you can lock resources.
 - You need to upgrade the security posture. For more information, see [Update security posture on Azure Local after upgrade](../manage/manage-security-post-upgrade.md).
 - You may need to create workloads and storage paths for each volume. For details, see [Create volumes on Azure Local](../manage/create-volumes.md) and [Create storage path for Azure Local](../manage/create-storage-path.md).