To remove all related data from DB just delete rows for selected NodeIds from tables APM_HardwareInfo, APM_HardwareCategoryStatus, APM_HardwareItem
DELETE FROM APM_HardwareInfo WHERE NodeId IN ()
DELETE FROM APM_HardwareCategoryStatus WHERE NodeId IN ()
DELETE FROM APM_HardwareItem WHERE NodeId IN ()
Historical data will be removed with next Database Maintenance run.