[Mobile] Change/Remove the left + right arrows on the product checkout listing image gallery

The arrows on the product checkout listing image gallery are way too big and totally overkill. They are taking up valuable image realestate right in the centre-sides of the images.

The carousel pagination circles at the bottom are already highly visible, and already taking up valuable image realestate.

On desktop the arrows are not as big and do not cover as much of the image.

Fix: remove the arrows entirely or at the very least, make them smaller on mobile.