PHILADELPHIA — In the end, the Wednesdays are pushing Jason Kelce toward retirement. On a Wednesday afternoon about two months ago, as he sat at his locker, stripping tape off his fingers and cutting tape off his cleats, Kelce answered a question I’d only casually asked. “Is this going to be your last year?” I said. “I don’t know. I do know — I mean, Wednesdays,” he said. “The Wednesdays are getting harder. Really, that’s the only thing.” The only thing? “Yeah,” he replied. “You’re sore Monday, you’re off Tuesday, but Wednesday … I’m just having a hard time getting going again on Wednesdays….