Thanks. I hope it gets rid of the lurking avast device driver updater too!
It certainly isn't lurking on my system (Avast Free), it was in the various versions as far as I'm concerned as a hook it would crop up now and then to suggest you install it, as soon as you went down that path it would then seek payment.
Presumably you haven't paid for it, so go into the AvastUI > Settings > components and if it is listed there uninstall the Driver Updater component.
Though it is listed in the AvastUI > Performance section, but is only active if you purchase it.