No way to delete the add-on Rated 3 out of 5 stars

I installed it and didn't care for the layout. When went to disable/uninstall and I could not find anything to allow me to do this. It didn't show in the Extensions, Plugins, Addons nor Tools. How do you disable/uninstall? I have a lot of "buttons" on my navigation bar and they disappear, unless I check the navigation box to bring it back. Then I still have the OneLiner URL box along with the one on the navigation bar. I gave it three stars because if one has a "vanilla" install, then I can see it being useful - but if you have add-ons that place buttons on the navigation bar, then they disappear. Bringing them back, you still end up with the modified tab bar (2 URL boxes).

This review is for a previous version of the add-on (1).