Yesterday's Newsday column quoting friends of LAPD chief Bill Bratton about his New York aspirations was the talk of City Hall and the police department, the Daily News' Beth Barrett writes. Bratton dimissed as "conjecture" the column's suggestions that he is eager to get back to New York and is preparing to run for mayor there in 2009. He also said he will serve out his five year term as chief: "I'm not going anywhere." Friend Mickey Sherman told the Daily News he was speaking in jest when he told Newsday that after "cleaning up" Boston, New York and Los Angeles, "being mayor of New York might feel like a part-time job" to Bratton.