It appears that the feature does not work when activated. I accidently clicked the wrong place before the page was fully loaded and the key was gone - although I should have gotten the confirmatino request to delete the key.
I got the confirmation. Maybe because the page wasn't fully loaded the feature hadn't loaded yet? If that's the case, then there's not much I can do, since the page has to load for features to work.
It appears that the feature does not work when activated. I accidently clicked the wrong place before the page was fully loaded and the key was gone - although I should have gotten the confirmatino request to delete the key.