No image on Latest News articles

How can I modify the them to NOT SHOW the very odd ball size image above the listed articles in the Latest News section for the BLOG section of the site I am developing. The size of the images alone are a problem being wider than most images would be. I have selected thumbnail in the theme options but that just makes it shorter...how about an option of NO IMAGE..that would be a great solution to the problem. Not every post is going to have an image and without on the article sits very low.
Please instructions on how to Not have images in the latest news section of this theme. please