Anyway, you can’t remove your own account because you can’t regret.
In the past, some users delete their account and then want to come back. System does not allow ressurrection of accounts.
So, if you go, never more DaveD.
You need to ask a Moderator to do so.
btw, if its just that you don’t want to receive reply notifications in the threads you’ve posted in you can disable those. If its something else, well, we can’t try to fix it if we don’t know what it is.