The question has been asked lately in the forum. Apologies for not getting back to you earlier on the matter.
There is no direct way to delete an account from the interface. To do so, you need to get in touch with us.
1) Make sure you are logged in.
2) Go to the contact form (click on the little pen on the top left of the main page above the green dice).
3) Send a message requesting the deletion.
4) We will come back to you to confirm.
Have fun!