Revert incorrect instructions regarding Telnet
These instructions were added after suggestion to use jupyterhub.tn.esss.lu.se to get around issue with Telnet. However, this did not work - it is no longer possible to use the jupyterhub script.
These instructions were added after suggestion to use jupyterhub.tn.esss.lu.se to get around issue with Telnet. However, this did not work - it is no longer possible to use the jupyterhub script.