Pretty sure it doesn't. I even checked Serebii and it doesn't say it has. This is pretty much something me and a lot of other people have grown acostumed to. Gamefreak loves to remove features between generations to try to make the older gen more unique (which is complete bullshit), basically saying for you to buy the previous games if you want that feature. This has been happening since Gen 3.
Yeah I looked it up more and still couldn't find anything. It's a shame as I think that was one of the best features in OR/AS. Though I loved the new method of flying introduced in it, and certainly enjoy the expanded ability to ride Pokémon in Sun and Moon.

