A livery driver with a mysterious personal life was seriously wounded yesterday in Queens, becoming the first livery hack shot on the job in more than a year. Police have neither suspect nor motive in the 2:30 a.m. wounding of Michael Goldberg, 36, at 253rd St. and 147th Drive, in Rosedale. But the incident was even more puzzling to his wife, who said she had believed Goldberg was in Kuwait with his parents. Kate Bontoyan, 52, rushed to her husband's side in the intensive care unit at Mary Immaculate Hospital, where he communicated by writing notes. She said he went...