Deleting Hosts
Use the X button in the Host Actions column to delete hosts. Deleting a host removes the associated Server object and any related configuration or statistics for the given host.
The host no longer appears in the list of hosts after deletion. However, if the underlying server is still running, the host will reappear the next time its heartbeat service runs. All configuration settings for a regenerated host use the defaults for its list of services and for the monitoring service configuration.