Edit/remove sliding header on home page

Hi! I've installed the Catch Kathmandu theme and I've run into a problem with the home page. I'm guessing there is a simple solution but I can't find it... I was hoping to see in the video about installing a feature image, how I edit the images in the sliding header. But this is about another header. I've been able to add a second header above the theme's default images (the nepalese pictures), but how do I remove these example images? http://onzemathenesserweg.nl/ I would appreciate your help! Kind regards