Outgoing CNN anchor Brian Stelter started the final episode of “Reliable Sources” on Sunday by saying that the show was a small but mighty “one-of-a-kind.” Stelter said, “One of the biggest media stories of the week is right here. It’s the end of this show. CNN has canceled ‘Reliable Sources.’ Yes, the longest-running program on the network. I have a lot of thoughts about it but am going to save those for later this hour. As most of you know, CNN has a new owner. Warner Brothers Discovery is making big changes across the company. And there’s going to be...