Another Mercedes-Benz, another bizarre theft from “Two and a Half Men” star Charlie Sheen. For the second time in five months, one of Sheen’s Mercedes was stolen and sent off Mulholland Drive near his hilltop California home yesterday, cops said. Firefighters discovered Sheen’s silver Mercedes S600 in a ravine at around 3 a.m. Someone had apparently swiped the car from his Sherman Oaks driveway. The car was in the same area where another Mercedes owned by Sheen was found on Feb. 5. That car apparently was stolen from Sheen’s garage and sent over the cliff.