Providing mail.target is really confusing and poor UX:
* When a user enables a unit, it's not truly enabled until they ALSO
enable mail.target. This is very counter-intuitive.
* `mail.target` provides no extra value in itself, nor is it anything
"standard".
* Any user wanting this specific target can still continue using it just
dropping in a `mail.target` file.
Signed-off-by: Hugo Osvaldo Barrera <hugo@barrera.io>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
