NEW: "She killed them and she left them there on the floor." Prosecutors in the Lindsay Clancy trial end their closing arguments with the chilling details on h

NEW: "She killed them and she left them there on the floor." Prosecutors in the Lindsay Clancy trial end their closing arguments with the chilling details on how Clancy killed her three young children. "She left them discarded on the basement floor like broken toys because she was done playing the…