You can unregister a Platform Deployment by deleting the Platform Deployment from the Platform Deployment registry list. The Platform Deployment is not physically removed but is no longer monitored by the system. This is useful for Platform Deployments that are no longer in service and service for internal in the organization.
Navigate to Administration Module | Platform Management | Registered JPDs, if you use the classic navigation.
Select Topology| JPD Services.
Select the Platform Deployment from the Actions list, select Delete Platform Deployment.
Click Confirm in the Confirm Deletion dialog.