Openhab2 / openhab3 conflict?

Noob question here,
I recently upgraded to OH3 and noticed that I still have openhab2 installed? I ran the update from the
openhabian-config tool? See screenshot below:

Can I or do I need to uninstall OH2, If so how?

Thanks again for any help.

                      _   _     _     ____   _
  ___   ___   ___   ___  | | | |   / \   | __ ) (_)  ____   ___
 / _ \ / _ \ / _ \ / _ \ | |_| |  / _ \  |  _ \ | | / _  \ / _ \
| (_) | (_) |  __/| | | ||  _  | / ___ \ | |_) )| || (_) || | | |
 \___/|  __/ \___/|_| |_||_| |_|/_/   \_\|____/ |_| \__|_||_| | |
      |_|                          3.0.0.RC1 - Milestone Build

Looking for a place to get started? Check out 'sudo openhabian-config' and the
documentation at https://www.openhab.org/docs/installation/openhabian.html
The openHAB dashboard can be reached at http://openHABianDevice:8080
To interact with openHAB on the command line, execute: 'openhab-cli --help'

[15:23:25] openhabian@openHABianDevice:~$ sudo systemctl restart openhab.service
[sudo] password for openhabian:
[15:26:25] openhabian@openHABianDevice:~$ cd /
[15:27:08] openhabian@openHABianDevice:/$ dpkg -l openhab*                                              Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name             Version      Architecture Description
+++-================-============-============-=================================
ii  openhab          3.0.0~RC1-2  all          openhab
ii  openhab-addons   3.0.0~RC1-2  all          openhab-addons
un  openhab-runtime  <none>       <none>       (no description available)
rc  openhab2         2.5.11-1     all          openhab2
un  openhab2-offline <none>       <none>       (no description available)
un  openhab2-online  <none>       <none>       (no description available)
[15:27:32] openhabian@openHABianDevice:/$

ii means installed package.
rc stands for removed package but configuration files are still there
un I haven’t see before

here is an overview: https://linuxprograms.wordpress.com/2010/05/11/status-dpkg-list/