To uninstall education-roaming-workstation just follow these instructions.
sudo apt-get remove education-roaming-workstation
This will remove just the education-roaming-workstation package itself.
sudo apt-get remove --auto-remove education-roaming-workstation
This will remove the education-roaming-workstation package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for education-roaming-workstation then this will work.
sudo apt-get purge education-roaming-workstation
Or similarly, like this education-roaming-workstation
sudo apt-get purge --auto-remove education-roaming-workstation
|Maintainer||Debian Edu Developers <firstname.lastname@example.org>|
|Description||Debian Edu networked roaming workstation packages|