BOUTTE, LAFormer police chief Robert J. Kensworth, whose specter still roams the top floor of the old Third Precinct station, said Monday that he is unable to make a cup of coffee without everyone freaking out. 'Can't a man make himself a cup of joe without some cleaning lady screaming her head off or some bandy-kneed recruit falling all over himself?' asked Kensworth, who was knifed to death by a convict in the third-floor hallway six years ago. 'So there's a cup and saucer floating in midair... What do they want? I'm supposed to drink out of my hands?' According to Tom Carlton, who has worked at the Third Precinct for 17 years, 'old hardnosed Kensworth' loved his coffee. 