just to make sure this isn't the cause, comment out the dnsmasq and unbound lines in /etc/resolvconf.conf:
#dnsmasq_resolv=/var/run/dnsmasq/resolv.conf
pdnsd_conf=/etc/pdnsd.conf
#unbound_conf=/etc/unbound/unbound.conf.d/resolvconf_resolvers.conf
and check /etc/unbound/unbound.conf.d/resolvconf_resolvers.conf doesn't exist, if it does, delete it and restart unboud (or reboot).