New review comment by mobinmob on void-packages repository

https://github.com/void-linux/void-packages/pull/33301#discussion_r721599543

Comment:
I think that is a bad idea, because it leads to a service that does not really work ootb. The script currently follows what the [upstream systemd service](https://github.com/Nefelim4ag/Ananicy/blob/master/ananicy.service) does, but uses printf instead of sysctl as the later is not exactly suited for use in chainloading...

I cooperated with @linuxer in order to test an [ananicy service](https://github.com/mobinmob/void-66-services/blob/devel/usr/share/66/service/ananicy) for void-66-services. In an execline script sysctl is used in an if block. In a posix shell script, printf seems like a good choice.