removing unused navigation tabs in Berlin

How can I remove unused navigation tabs in Berlin theme?

If you are using an Omeka 2.x install, you can manage navigation from the Appearances settings.

I can edit, change or add tabs, But I cannot remove tabs that I have created. Is overwriting the tab the only way to 'remove' it from 'the list'?

You should be able to delete tabs for links that you have created, but not delete nav items generated by plugins (contact us, map)