The group of campaign workers who sued Democratic gubernatorial candidate J.B. Pritzker less than three weeks before the election over alleged racial discrimination say the lawsuit was not politically motivated.Ten current and former campaign workers spoke at a news conference held at the Samuels and Associates Ltd. law office Monday on Chicago’s South Side. It came less than a week after they filed a lawsuit alleging the Pritzker campaign placed minority staffers in dangerous places and denied them promotions.The …