Sparkling Popular Post Widet - how to get rid of the image above post

Hi, I really like this widget - the sidebar looks way better and more eye-catching. The problem is, the featured image is automatically displayed above each post as well which looks really bad on my website. I hope there is a way to get rid of feature image being displayed above the post and still keep using Sparkling Popular Post Widget so that the post would be displayed on the sidebar with images(even though there would be no featured images above the posts).

Add this code snippet to Theme Options - Other - Custom CSS.

.single-featured {
    display: none;

This code will remove featured images from blog page and single post.