No Trees/Foliage zone

Hi,
I’m nearly 100% sure that there was some kind of action or element known as NoTreeZone that was used to delete trees and foliage but now I can’t find it. Was it even really or I’m schizophrenic,
and if it is not reall or was deleted is there any way to delete trees now using mission editor?

Find that out, you need to place the “notreeobjectgroup100” on the map (it is a unit, Type obejctGroups)