[ubuntu] How to force an uninstall with NO prompting?

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http://ubuntuforums.org – I am trying to UNinstall the useless GRUB packages from the CLOUD version of Ubuntu. These are not needed when doing a PV-GRUB based instance launch in AWS (a lovingly handcrafted /boot/grub/menu.lst is all that is needed). I would not have bothered with this except for the fact that now there is an update to a GRUB package that is causing a prompt that freezes my automated customization script. If a prompt happens when no one is there to read it ... did it make a sound? Well, I don't know. But it freezes the whole procedure. So I decided to just remove all the GRUB packages. But even T (Hardware)