Need an easy way to clean up stale kits in the UI

As a developer, who has to have several kits installed for different B2Qt targets, it would be nice to have some easy way to get rid of stale kits in the Options – Kits. If I have, for the lack of disc space, removed a kit from hard drive, I cannot remove the kit from the QtCreator anymore via UI.

Perhaps the right way to remove a kit would be via the Options – Kits before removing from the HD, but I don't recall that this have been said anywhere. So, perhaps, QtCreator should suggest removing the stale kits instead of just disabling them? Or at least it should be possible to remove the kit from the QtCreator even if the kit have already been removed from HD.

Now I can only guess, that I must clear .config/QtProject/ -directory from HD as there are no instructions to say otherwise.