openSUSE Tumbleweed includes Akonadi with it’s base KDE Plasma pattern. If you uninstall it, it will reinstall when all of the packages refresh (about 4 times a year). You can lock it, but then you may have some side effects.

To disable Akonadi Server autostart, edit the file ~/.config/akonadi/akonadiserverrc

StartServer=false

This should work with any distro, as it is KDE specific and not distro specific.