MURRIETA, Calif. (KESQ) - A 51-year-old firefighter accused of sexually assaulting three women -- including while he was on duty in Temecula -- is no longer on the Cal Fire payroll, officials confirmed today. David Renteria III of Placentia was arrested in April following a sheriff's department investigation initiated last fall. Renteria pleaded not guilty Friday to four counts of forcible rape, two counts of sodomy and one count each of k…