PHILADELPHIA — The Giants won’t be getting any more points or energy out of rookie Cam Skattebo — their leader in both categories. Access the Giants like never before Get texts from Paul Schwartz with all the latest Giants news and insights, exclusive to Sports+ subscribers. tRY IT NOW Don’t try using the faulty NFL logic that all running backs are interchangeable with the Giants, who watched Skattebo suffered a gruesome season-ending dislocated ankle in Sunday’s 38-20 loss to the Eagles . “He’