The unlabel command of the tf command-line utility removes an item from an existing label in the Team Foundation source control server. For an introduction to labels, see Working with Labels. For information about how to assign a label to a set of files and folders, see Label Command (Team Foundation Source Control).
If you remove remove all items from a label in the Team Foundation source control server, that label is deleted. You can also delete a label using the command tf label /delete. To learn more about the existing labels in the system, see Labels Command.