For security and practical reasons, we do not normally delete members' accounts at EUTM if they already have posts on them. We will gladly make your account inactive so you won't continue receiving Topic Reply Notifications or private messages. If you have an issue with the username you chose, you can change that. But deleting it isn't an option unless your posts and any replies to them simply aren't worth keeping.
It's probably good to keep in mind that when you create online accounts, especially on message boards, they usually last forever.