An NYPD captain in a scandal-plagued Brooklyn precinct has a name for cops who don't write enough summonses: "do-nothings." Capt. Alex Perez, in a new set of recordings, threatened to fire less productive cops and talked openly to other supervisors about summons quotas. "Your workers will get you something," Capt. Alex Perez said on a tape played for the Daily News Friday. "Your do-nothings will get you nothing." An officer assigned to the 81st Precinct secretly made the tapes and recently turned them over to a lawyer for Officer Adrian Schoolcraft, who was the first to blow the whistle on...