[Plugin: Testimonials Widget] Hide "No Testimonials Found"

In building out our website pages, I’ve added code for future (i.e. not yet in existence) testimonials with set categories: Nothing would show up on my page unless a testimonial existed in that category. After the 2.1.4(?) update, I see a “No Testimonials Found” error that I can’t figure out how to hide again. I’d much rather hide this than go back in and reconfigure all my pages, only to have to add the shortcode back when a fitting testimonial is added. See: http://www.stoneagetools.com/surface-preparation/automated-tools/sg-e60-e70/ Can you give a hint?

BTW: Thank you for a very functional and easy to work with plug-in.

http://wordpress.org/extend/plugins/testimonials-widget/