According to this comment [1], this seems to be needed to detect wifi
devices.
In node exporter we can see this:
```
--collector.wifi Enable the wifi collector (default: disabled).
```
since it's enabled by default and we don't even change this in our
systemd templates for node-exporter, we can easily assume in the end
it's not needed. Therefore, let's remove this.
[1] dbf81b6b5b (diff-961545214e21efed3b84a9e178927a08L21-L23)
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit b9cdf341be)
1a9043128c