server/reds: zap unsetting of QEMU_AUDIO_DRV
server/reds: zap unsetting of QEMU_AUDIO_DRV

alon/spice-server,alon/spice-server,freedesktop-unofficial-mirror/spice__spice,SPICE/spice,ya-mouse/spice,Fantu/spice,elmarco/spice,ya-mouse/spice,Fantu/spice,virtualAMP/spiceplay,mathslinux/spice,freedesktop-unofficial-mirror/spice__spice,SPICE/spice,fgouget/spice,Fantu/spice,fgouget/spice,virtualAMP/spiceplay,mathslinux/spice,mathslinux/spice,virtualAMP/spiceplay,elmarco/spice,SPICE/spice,dezelin/spice,alon/spice-server,elmarco/spice,alon/spice-server,freedesktop-unofficial-mirror/spice__spice,dezelin/spice,alon/spice-server,ya-mouse/spice,mathslinux/spice,virtualAMP/spiceplay,elmarco/spice,fgouget/spice,dezelin/spice,dezelin/spice,dezelin/spice,Fantu/spice,freedesktop-unofficial-mirror/spice__spice,freedesktop-unofficial-mirror/spice__spice,fgouget/spice,elmarco/spice,mathslinux/spice