Remove the unused print notebook view

We used to have a hackish read only view that was used for printing.  Now the main notebook page is fully capable of being printed, so this view hasn't been used for a while.  This PR simply removed the old unused code.

Before this can be merged:

- [ ] #3232 will have to be merged and this will have to be rebased
- [ ] The style.min.css will have to be updated