Less than two months after the country’s largest soda tax went into effect, embattled lawmakers in Cook County, Ill. — the home of Chicago — have decided to repeal it. The tax has been plagued, in its very short life, by legal challenges, implementation glitches and a screeching, multimillion-dollar media battle between the soda industry and public health groups. On Tuesday, in recognition of growing public pressure, the Cook County Board of Commissioners voted 15-1 to roll back the tax