Невозможно удалить shorewall из Ubuntu

I noticed on some of my servers that the shorewall service is installed but it's not running. I want to uninstall it.

I executed the command sudo systemctl status shorewall to check the status of shorewall and got the below output.

shorewall.service - Shorewall IPv4 firewall
Loaded: loaded (/lib/systemd/system/shorewall.service; disabled; vendor preset: enabled)
Active: inactive (dead)

Then I executed sudo apt-get purge --auto-remove shorewall command to uninstall the shorewall package. After uninstalling it, I checked the status of shorewall with this command again sudo systemctl status shorewall, which shows output this:

shorewall.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
Jul 08 20:24:23 ip-10-10-10-10 systemd[1]: Stopped Shorewall IPv4 firewall.

Can anyone confirm please that shorewall was uninstalled successfully? Why is it giving output like this?