Walgreens is set to go private after shareholder approval of its takeover. (Photo by Spencer ... More Platt/Getty Images)Getty ImagesWalgreens Boots Alliance Inc. has taken a major step forward in its bid to go private after it announced that at the Company’s Special Meeting of Shareholders, WBA shareholders had approved the previously announced acquisition of the company by entities affiliated with Sycamore Partners Management.According to the preliminary results, approximately 96% of votes cast at the Spe ...