Brock deFries, left, and Jeron Jones each returned interceptions for touchdowns in Mission Viejo’s 35-7 win over Santa Margarita. Two of Southern California’s top high school football teams, Mission Viejo and St. John Bosco, came away with impressive victories Saturday night. Mission Viejo intercepted four passes, returning two for touchdowns, and got three sacks from Jaden Williams in a 35-7 …