Coursepress Courses Pagefeat ured image

Hi

On the Courses page http://seo-splash.co.il/nitza/courses

above each course is a.fwit within div.gr-i see image below

https://postimg.org/image/inehwo57b/

this also displays the featured image on blog page http://seo-splash.co.il/nitza/category/%D7%91%D7%9C%D7%95%D7%92-%D7%94%D7%A9%D7%A4%D7%A2/

so I cant use display:none;

I would like to remove this since its empty and takes up space.

please assist
thanks