Even Andrew Cuomo’s beloved 90-year-old mom Matilda has been canceled by her disgraced son’s behavior, sources told The Post. State officials removed the matriarch’s name from the Web site of a mentoring program she founded and oversaw — after her ex-gubernatorial son’s humiliating departure from office over sex-harassment claims last year, sources said. “It’s a sad day when politics has gotten so ugly that it would come down to removing the name of 90-year-old former First Lady Matilda Cuomo,” raged a disgusted source close to the Cuomo family.