Both the theme and WooCommerce are responsive by design, so that responsiveness cannot be disabled or removed very easily. A great deal of testing and research goes into mobile design and responsiveness, and the techniques we use are pretty commonplace nowadays. The purpose is to scale down content and provide an easier and more readable eperience for mobile visitors, especially those on a 2G/3G connection. If you sell anything through your site, this is doubly important – it is extremely hard to navigate and use Store on a mobile screen without some level of responsiveness.
You can customize aspects of the mobile view you don’t like or want to adjust with Custom CSS to a degree. The following provides some tips: