A lawsuit by a former Jersey City school business administrator alleging discrimination and retaliation by the city school district was dismissed in its entirety due to a lack of evidence to prove the allegations, a judge ruled. Regina Robinson, who served as the district’s business administrator until 2022 when her contract wasn’t renewed, alleged in the lawsuit she was paid less than her predecessor because of her race and gender and was retaliated against by the district administration and its top leaders. But Hudson County Superior Court Judge Kimberly Espinales-Maloney, who granted the di…