Remove Exchange 2007 server

Hi, I hope someone can help….

I recently created a new Exchange 2007 server in our existing Exchange 2007 organisation to do some testing. Without thinking, I rebuilt it after my testing was done. I now have an entry in Exchange for this server (it was only doing client access role – this is on another server now) in Exchange. Anyone know how I can remove it? Obviously, the server in question is no more so I can’t uninstall it properly.

Any suggestions appreciated!!