JACKSON, Miss. — The U.S. Justice Department said Monday it is ending its investigation into the 1955 lynching of Emmett Till, the Black teenager from Chicago who was abducted, tortured and killed after witnesses said he whistled at a white woman in Mississippi.The announcement came after the head of the department’s civil rights division and other officials met with several of Till’s relatives.Till’s family members said they were disappointed there will continue to be no accountability for the infamous killing, with no …