I ran into this the other day. Under accounts, you tap the account you want to delete. There should be the option to remove account in the menu button ... It just says sync now. Tap the account again. That took a few hours to figure out.
Mine is my media server and desktop (I don't play games). It's a little slower running osx than other oses but if it's a server, you probably won't care enough to put osx on it.