You can remove virtual machines from a cluster.
You can remove a virtual machine from a cluster in two ways.
When you remove a host from a cluster, all of the powered-off virtual machines that you do not migrate to other hosts are removed as well. You can remove a host only if it is in maintenance mode or disconnected. If you remove a host from a DRS cluster, the cluster can become yellow because it is overcommitted.
You can migrate a virtual machine from a cluster to a standalone host or from a cluster to another cluster using the Migrate Virtual Machine wizard. To start this wizard right-click the virtual machine name and select Migrate.