Come on, I haven't seen many people actually use emojis on the forum (aside from the snap icon, and the smiley face). There's not really much point in removing that because no one uses it. If it becomes a problem, then it can be removed.
Just as a general word of advice, don't look for things that can be a problem, but instead look for ways of actually helping people. Answer people's questions, make your own projects, etc. There's no reason to look for a problem before it happens.