Comment # 47 on bug 1165780 from Karl Mistelberger

> Indeed but playing with stuff in /etc during package update is usually not a
> good idea so I would be tempted to leave it unless the user is hit by the
> systemd race issue and in this case we can ask him to remove the symlink
> manually.

I fully agree on the above. However this is not a usual case. IIRC keeping the
symlink and removing the install section will result in a runtime error for
everybody updating.

As you never want to install the service for a good reason removing the symlink
upon update would be fine.