[qualiteam]

Originally Posted by cflsystems

This article is somewhat misleading and will not remove the notice. It will hide it with css. So you can't see it but the "Power By X-Cart" label and the link will still be present in the html code.

This will remove it - https://www.cflsystems.com/remove-branding-for-x-cart-5.html

That is true, the label will be invisible but still be present in the html code.
If the topic starter wants to remove it completely he can as well use the embedded webmaster mode.
Here's the article on how to use the webmaster mode.
https://kb.x-cart.com/look_and_feel/theme_tweaker/template_editor.html