Actor David Del Rio has been fired from the second season of CBS’ “ Matlock ” amid reports of a sexual assault investigation. Though details of the allegations are scarce, Deadline reported Thursday that Del Rio was escorted off the Paramount Studios lot ― where “Matlock” is filmed ― on Oct. 2, the same day the incident was reported. The alleged incident took place Sept. 26 and involved Del Rio’s co-star, Leah Lewis, according to the report. Shortly after Deadline broke the news, Lewis released