Cannot find background image

I’m trying to remove background image (fruit_bg.jpg) which is on the right boottom part of the page:
http://test.remedium-pabianice.pl/?page_id=17

I see on the page inspector that it’s the foollowing background image:
background-image: url(“http://kriesi.at/themes/enfold-restaurant/files/2014/07/fruit_bg.jpg”

Cannot find any place where I can remove it. I can of course create new site, but it’s time consuming.

Thanks a lot for your help and such a great theme.
Jaroslaw