Just got a new mac and while I had disabled this on my old one, everything’s moved around and I can’t figure out how to get rid of this.

I don’t use the multiple desktops thing and I like to use the Magnet app for window snapping. At the moment I can’t drag the window to the top of the screen to make it occupy the full size of the screen using Magnet because instead it opens up the ribbon at the top for managing multiple desktops.