The content originally appeared on: CNN (CNN Business)First, Amazon killed traditional bookstores. Then it opened its own. Now, Amazon is doing away with its bookstores. The e-commerce giant confirmed Wednesday that it is closing 68 retail locations, including all of its Amazon (AMZN) Books stores, as part of a broader shift in its bricks-and-mortar retail strategy. In addition to the bookstores, Amazon is also closing two other physical retail concepts: Its '4-star' stores, which sold products that had high customer […]