Remove AD1981HD code, since the generic mixer init can do all of this now.  Also, note that codec->init_widget functions must be used with care since they can create duplicate mixer item names.
Remove AD1981HD code, since the generic mixer init can do all of this
now.  Also, note that codec->init_widget functions must be used with
care since they can create duplicate mixer item names.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars