Removing Footer Theme Name

Since that theme is a commercial one, you should probably post your question on their support page. That being said, there’s probably a couple of general ways to do it, depending upon your level of expertise. The most common would be to make a child theme (unless the theme’s licensing prohibits it) and look in the .php file that creates the footer (usually footer.php). You can also do it using jQuery, either in a text widget or if the theme has an option to save custom script code. Can’t give you more specific instructions since I’m not familiar with the theme.