Prune this apple tree branch?
I have a branch on my apple tree that appears to be dying, it's about 4"-5" in diameter. The smaller branch attached to this dying branch going off to the top left of the photo appears healthy and is bearing excellent fruit. However as you can see the bark is starting to peal (no rot underneath) but the wood is starting to show. Do I need to cut this branch off asap or should I cut it off once the smaller branch stops bearing fruit? Thanks!