Removing Safari plugins

I removed every single file I could find but still get these "lovely" messages every time I launch Safari. Anyone knows how to get rid of them?

Sorry if I've been asking too much lately, I'm such a noob

My choice would be to install Saft.app again and then use Appcleaner to remove it - there is a choice for plugins as i recall;
Download AppCleaner for Mac - Uninstall your apps more easily. MacUpdate Mac Software Downloads

Thank for your suggestion. It didn't help though