You can hide displaying any element on your landing page for the selected view (desktop or mobile) in the following way:
1. Click on the selected element so it is invisible on the selected view.
2. On the left side, choose the screen icon (for the desktop view) (1) or the smartfon one (for the mobile view) (2) depending, on which view displaying an element should be hidden.
Publish your landing page – the element will stop being displayed for the seleted view.