systemd components should now be removed from the system.
root@devuan:~# apt-get purge systemd systemd-shim
If you are not using D-Bus you might be able to remove libsystemd0.
root@devuan:~# apt-get purge libsystemd0
Purge any orphaned packages left over from your previous Debian install.
root@devuan:~# apt-get autoremove --purge
This is a good time to clean out old package archives left over from your Debian system.
root@devuan:~# apt-get autoclean
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