How to get rid of "class="search-thumb">

Hi guys,

how can I get rid of this: http://zerocamouflage.com/category/21st-cash-cow/

I don’t want to see this:

” class=”search-thumb”>
3 Ways of Making Money on the Internet
Affiliate Marketing, Digital Products & Google AdSense
“>3 Ways of Making Money on the Internet
Affiliate Marketing, Digital Products & Google AdSense

Here’s the article: http://zerocamouflage.com/category/21st-cash-cow/

I compared the settings of other articles to make sure I don’t miss something but obviously I DO miss something.

Thanks!