Charges have been dropped against the teenage rapper accused of shooting an NYPD officer during a scuffle in the Bronx earlier this year, officials confirmed. The gun and assault case against Camrin Williams, a 16-year-old reputed gangbanger and rapper who goes by the stage name C Blu, “cannot be prosecuted,” the city Law Department said in a Friday statement, without elaborating. Williams had been facing the charges after allegedly shooting 27-year-old cop Kaseem Pennant in Belmont while he was on probation for a prior gun case in January.