In “The Good Nurse,” Eddie Redmayne plays a very bad nurse named Charlie Cullen, who confessed to killing up to 40 patients while working as a nurse in New Jersey and is suspected of killing potentially hundreds more. While he admitted to the killings he was less forthcoming about his motives, which dramatically speaking leaves “The Good Nurse” grabbing at straws. Director Tobias Lindholm, working from a screenplay by Oscar nominee Krysty Wilson-Cairns (“1917”) based on Charles Graeber’s 2013 book, instead turns his attentions toward the bureaucracies that allowed Cullen to operate and fashion…