I wrote the following question: Can Ride be used to Push a mount/animal companion? containing multiple questions. I was asked to separate them out, so I did. Once I separated out the question When pushing an animal, how long will it perform the trick it doesn't know?, the separate question was answered. With that answer, I realized I did not need an answer to the original question. Since the original question is unanswered, is it OK for me to delete it? The answered question kind of makes the original question irrelevant for me.
I don’t think anyone’s going to undelete your question if you delete it. Even if they did, it’s not like you’d be “in trouble” for it or anything. You could even, if you wanted nothing more to do with it but folks insisted on keeping it undeleted, ask to have the question dissociated from your account. But I really doubt this is going to come to that. Yes, it is “OK” for you to delete it.
On the other hand, it’s also a perfectly reasonable question. Maybe you no longer feel like you need the answer, but it could still be useful to someone. And even if the demands on your Handle Animal checks are less than you thought, if there’s an answer that’s cheap enough you still might end up using it. So at least if it were me, I wouldn’t choose to delete it.
But if you do, I don’t think anyone’s going to cry foul.