You'll need to add custom CSS to disable it, and make you do not add any widgets in the Bottom Footer Sidebar. Here's how you can do it:

0. Install WPLMS Customizer plugin.
1. Go to WP Admin -> Plugins -> editor -> WPLMS Customizer -> custom.css
2. Add the below code in this file:

Code:

footer .row+.row{
display:none;
}