Remove picture from Category page

I want to remove the category picture when viewing the products, and I cannot seem to find out where it is in the documentation,

lagourmandise.com/index.php?option=com_h...ie&Itemid=53&lang=fr

Im just trying to remove the huge 1st picture.

You need to go in the menu Display->Content menu, edit your menu (id 53) and set the option "Show image" to no.