CNN  —  Dollar Tree is ending its short-lived and ill-fated Family Dollar experiment, offloading the discount brand for $1 billion – just a fraction of its purchase price from a decade ago. Family Dollar will be sold to private equity groups Brigade Capital Management and Macellum Capital Management, pending regulatory approval that is expected to clear next quarter. Dollar Tree bought Family dollar in 2015 for $9 billion. “After a thorough review of potential alternatives for the Family Dollar