FBF Widget – Customizing look of feed

I want to streamline the look of this plugin a bit and know just enough PHP to be dangerous but not enough to know quite what to do. I want to remove the “headlines” from the feed as well as change the like button to simply text. Right now, it looks a bit graphically cluttered.

https://www.ads-software.com/plugins/fbf-facebook-page-feed-widget/