Would seem like simple thing, but cannot it out (iPad). If option doesn’t exist this is going to get messy.
I am not with Algoriddim Team, but I think I can help with that.
You cannot remove a song from a streaming playlist (at least not with Apple Music), as the native apps remain master (kind of protection), so you can only add songs (not remove) with the Djay App.
But of course, you still can remove songs from streaming playlists using the native Apps (example Apple Music).
EDIT : What I am saying here is wrong : This is how it works on the Mac App, not the iPad app. I don’t see how to delete from the iPad app indeed.