Stop Pinit button from showing on simple share icons

I set my image selector to .jpibfi_container img.

How do I get the pinit button to stop showing up on my social sharing icons below the post? I’m using simple share plugin. I see there is a minimum image resolution where I can set the pin it button to show on images a certain pixel width and height. I put in at least 768 pixels and the pin it button still shows up.