I have created a website for a client, however after relinquishing the admin account to my client he felt like he had everything under control and started to mess around with the site. This caused the site to crash and I had to recreate it from scratch. To avoid this I made him an editor user but wanted to remove the admin user ID from everywhere in the site so I may use it to do regular maintenance. I have managed to hide the admin username from everywhere in WP except in the drop down menu in the post or pages section as shown here. Is there a way to either remove this drop down menu or remove the name of the admin from this box?