I doubt you could remove it all together because it operates the climate control and everything else associated with the LCD. I'd say you would have to mount it elsewhere or get some low level outputs for the factory unit.
I understand that this thread is over a month old.
Currently have changed all of the pplastics in my MY07 Berlina to Calais silver, last thing to do is the radio. Found an WM Statemans one on eBay. Has anybody managed to fit one of these to a VE?
Already have the plastic surround from Holden but quickly stipped the dash and centre consol down and it appears I'll be short of some screw holes.