I inherited a company Trello workspace and there's a board in the workspace that is impossible to delete. I assume it was created by someone who's long gone from the organization, so their emails are defunct. We have a free account and there's a limited number of boards we can use, but this one legacy board is impossible to edit or rename and I cannot figure out how to delete it even though I'm an admin. Is this even possible to get rid of? Or do I just have an empty mascot board that will haunt me forever?