There is no option to delete an account on BitcoinTalk but you can try contacting administrators.
According to BadBear and Maged, theymos won't delete your account because it is a troublesome process.
https://bitcointalk.org/index.php?topic=463139.msg5135392#msg5135392I'd like theymos' statement on this rather than speculations.
Judging by other threads here, and looking at the help section, it should be technically possible. Heck over at Litecointalk you can do it yourself, and it looks like the same forum software.
We don't delete accounts anymore, because it is quite a bit of work. Before an account is deleted, theymos has to do at least the following:
1) Make sure that the account wasn't hacked.
2) Check for any existing scam accusations against the person.
3) Check their outbound PMs for scammy behavior.
This is a long, painful process, so theymos just doesn't do it anymore.
I'd like theymos' statement on this rather than speculations.
Judging by other threads here, and looking at the help section, it should be technically possible. Heck over at Litecointalk you can do it yourself, and it looks like the same forum software.
He's said before he doesn't do it anymore.