Czuch Chuckers: You can not remove a discussion board from a fellowship at this point.

You can rename it and use it for "something else"

You can rename it as "do not use" or something - then also edit the board and make it so only King and above can read/post - then no one will be able to use it.

Or if for some reason you REALLY REALLY REALLY want it removed, you can ask Fencer and he may remove it for you.