release-prep: don't include the Travis-CI encrypted distribution ID
release-prep: don't include the Travis-CI encrypted distribution ID

dominicgs/GreatFET-experimental,dominicgs/GreatFET-experimental,greatscottgadgets/greatfet,greatscottgadgets/greatfet,greatscottgadgets/greatfet,dominicgs/GreatFET-experimental,greatscottgadgets/greatfet