[aur-general] Please delete dovecot-systemd

[Oon-Ee Ng]

Please delete dovecot-systemd [1], I am the maintainer.

Reason: systemd support already to dovecot in [extra] (bug-report
closed here [2])

[1] - https://aur.archlinux.org/packages.php?ID=47523
[2] - https://bugs.archlinux.org/task/22601