Never mind

I signed up as an individual, for a free account. It so happens I do have my own domain, which I entered into the "domain name" when signing up for this account. Now the mail interface keeps asking me to verify my domain. I don't want to change my MX or DNS records because I'm already pointing that domain elsewhere. So how do I "undo" the domain name I mistakenly entered upon signup? Sorry, my bad, my fault.

====> I somehow found the Control Panel that let me delete my own domain name.