SNMP hosts can be removed using the individual host element menu or using the Hosts property dialog box:
To remove a host using the element menu:
In the Explorer pane, expand the Elements root element > SNMP Integrator.
Right-click a host, then select Remove Host/Device.
To remove multiple hosts using the top-level object’s host Properties dialog box:
In the Explorer pane, expand the Elements root element.
Right-click the top-level SNMP Adapter element, then select Properties to open the Status property page.
In the left pane, click Hosts/Devices to open the Hosts/Devices property page.
Select one or more hosts, then click Remove Host/Device.