Need help uninstalling plugin demos - MAC 10.8.5

I’ve searched this forum and looked through the Steiny website. I cannot find a way to get rid of the files from the demos I tried when I bought Cubase 7.

I installed demos for Open Deck, the various vintage pedals and a few other Steinberg / Yamaha plugins. Some programs hang on the plugin scans making them almost unusable.

Any help would be greatly appreciated.