RAYNHAM, Mass. — A Raynham barber is retiring this weekend after 51 years on the job.Robert Ferreira, owner of the Colonial Barber Shop, is hanging up his shears on Saturday.The 73-year-old Ferreira planned on retiring at 65, but told the Taunton Daily Gazette that felt he had a few more years left after reaching that milestone.But while on vacation in Florida earlier this year, he decided relaxing on the beach was something he could get used to.His customers are sorry to see him go.