NEW YORK — Too many cooks in the kitchen brought the NYPD’s leadership dynamic to a boil — and may have led to Commissioner Keechant Sewell’s surprise resignation, former NYPD Commissioner Bill Bratton said Tuesday. “Normally everyone in the (NYPD) should be responsive first and foremost to the police commissioner who is then responsive to the mayor,” Bratton said on the Len Berman and Michael ...