You can hide it by adding some custom CSS (admin > customize > themes)
.fps-topic .blurb {
display: none;
}
But keep in mind that it might make some results a little confusing, because there might not be a match for the search term in the title, and you’re hiding the blurb that shows it. (Might not be a problem in your case if most topics are nothing but images, but it could make it a little harder to find replies).
For example, this was a search for “tests” — without the blurb you lose the context for why it’s a result.
