Proper method to delete the Linux partition

I'm going to be assisting this client in upgrading from ZEN 4 -> 6.5, and
they have an installed base of approximately 1,500 systems (university
setting, so mostly classroom computers), ALL with an existing Linux imaging
partition. All of the systems support PXE, so we'll be migrating them to
that.

I know that you can disable the ZEN partition using policies, but is there
any way that the ZEN partition can be completely (and safely) removed from
the computer through policies or a new imaging process?

I saw a couple TIDs describing the use of FDISK to get rid of it, but having
to do that on 1,500 systems would obviously be a nightmare.

Thanks!

brian