This article details the steps for how to disable a vSphere Supervisor Cluster.
1. From the vSphere Client menu, select Workload Management.
2. Select the Clusters tab.
3. Select the cluster on which you want to disable vSphere Supervisor.
4. Click Disable.
5. On the Disable Cluster dialog box that appears with a message that all Kubernetes workloads and NSX configuration will be disabled on the cluster click click Disable.
Note: When you disable a vSphere Supervisor on a cluster, vSphere Lifecycle Manager uninstalls the Spherelet VIB and image from each ESXi host and the WCP service stops and deletes all workloads from the cluster.
https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere-supervisor/8-0/updating-vsphere-supervisor/managing-a-supervisor-cluster-using-vlcm/disable-a-supervisor-cluster.html