Fifteen counts alleging involvement in an illicit $4-million drug money laundering scheme have been dropped against one of 10 people indicted July 17 by a federal grand jury in Los Angeles. Assistant U.S. Atty. Brian A. Sun said the case against Katherine Marie Torres, 31, of Los Angeles, was dropped because of insufficient evidence. Trial for eight others accused in the scheme, which allegedly operated out of an auto parts store in Lincoln Heights, was set for Nov. 19. One suspect, Arturo Vigil, 22, of Covina, is still at large, Sun said.