Currently the only way to get the recently used emoji list to clear is by reinstalling the app. I'd love to have a way to make it so that I'm not still seeing emoji in that list that I accidently tapped on a year ago. Ideally I would want to be able to go into the settings menu and say that if I haven't used this emoji in x amount of time, then remove it from the list. But I'd even settle for just a button that clears the entire list so I don't have to reinstall the app to achieve the same effect.