If you no longer wish to host an addon (or secondary) domain name on your hosting account, you can remove it. Removing an addon domain will allow you to add that domain to another hosting account, or use it as the primary domain on the current account.
Note: All subdomains associated with the removed domain will also be removed, but the files will remain intact. You can manage subdomains separately.
Note: This process can take up to 24 hours to complete. Removing an addon domain will not affect the website of your primary domain name.