e.g. if you visit http://www.scala-lang.org/api/current/index.html#scala.collection.immutable.List and open the "Class diagram" twistdown the diagram itself is fine but next to it there's a "Learn more about scaladoc diagrams" link that goes to http://docs.scala-lang.org/overviews/scaladoc/usage.html#diagrams which does not exist. I poked around in the scala.github.com repo and I don't see such a section existing anywhere, so I think we need to just remove the links altogether.