optical-media: Fix physical optical drives being ignored
optical-media: Fix physical optical drives being ignored

Better when tested right? Don't ignore all the drives...

https://bugzilla.gnome.org/show_bug.cgi?id=729704

vrutkovs/grilo-plugins,MikePetullo/grilo-plugins,vrutkovs/grilo-plugins,MikePetullo/grilo-plugins,jasuarez/grilo-plugins,GNOME/grilo-plugins,MathieuDuponchelle/grilo-plugins,MikePetullo/grilo-plugins,GNOME/grilo-plugins,grilofw/grilo-plugins,grilofw/grilo-plugins,vrutkovs/grilo-plugins,vrutkovs/grilo-plugins,jasuarez/grilo-plugins,MathieuDuponchelle/grilo-plugins,MathieuDuponchelle/grilo-plugins,MathieuDuponchelle/grilo-plugins