Disable Activity hot corner hovering Gnome shell

To disable automatic activity view when the corner is hovered, edit

# nano /usr/share/gnome-shell/js/ui/layout.js


change reactive: true to false

 this._corner = new Clutter.Rectangle({ name: 'hot-corner',
                                       width: 1,
                                       height: 1,
                                       opacity: 0,
                                       reactive: true });icon-size: 48px;
 }