Delete extra admin accounts
One of our common security recommendations is to limit the number of "administrator" users your site has. Here are some step-by-step instructions about how to remove extra admin accounts.
1. Start by logging into your WordPress dashboard as an administrator, but not the administrator you'd like to delete.
2. Go to the users section, find the admin account you'd like to remove, and click the “delete” button under the name.
3. BE CAREFUL! When you go to delete the old account, WordPress will ask you what to do with the content attributed to that account. Click “attribute all content to” and assign it to yourself or another user. If you don’t do this, all the content will be deleted.
You should attribute all content to another user, even if the admin account doesn't seem to have any posts. They may have uploaded photos or done other work that isn't easy to see.
4. Click “confirm deletion”.
5. You’re all done.