Disable swap on Raspbian Buster

Most of the articles I found in searching for how to do this instructed running these commands at the solution to disabling swap on Raspbian Buster:-

$ dphys-swapfile swapoff
$ dphys-swapfile uninstall
$ update-rc.d dphys-swapfile remove

However, after a reboot, swap was re-activated.

After a bit more poking around, I got to permanently disable swap with the following:-

$ dphys-swapfile swapoff
$ dphys-swapfile uninstall
$ update-rc.d dphys-swapfile remove
$ rm -f /etc/init.d/dphys-swapfile

$ service dphys-swapfile stop
$ systemctl disable dphys-swapfile.service

I'm still confused about services that have entries both for systemd and init.d. So if you have some insights into this, please let me know.

debian, quick, raspberry pi, raspbian