Remove borders from Listings Highlight images

All of the marketplace listings have borders surrounding the highlight images.
To reproduce, open any marketplace listing with one or more highlight images and look at the border around the image.
See attached screenshot, on the left side is the current situation, on the right side I've removed the border using devtools to show how that results in more crisp imagery.

The issue here is that an actual CSS border is added to the div surrounding the image. The solution is to remove that CSS border.