Remove-MSDevices
Remove (delete) a list of Devices. Use the -UnDelete switch to Undelete instead. When a Device is Deleted it is moved to a Delete queue to be deleted at a later date. Deleting these Devices again with the -AllowRealDelete will truly delete them from MS.
Syntax
Remove-MSDevices -DeviceIds (Int32[]) [-BatchSize (Int32)] [-AllowRealDelete] [-UnDelete]