User blog comment:Purplepenguin5/Hi!/@comment-4698189-20111224222515/@comment-26686429-20111224222654

You can ask staff to delete it at Special:Contact from that account, but you can also just stop using it. It's not against the terms of use, it might be against policies of other wikis if you act as if you're 2 different people, otherwise it's completely fine.