I am not sure what you mean by remove space automatically, you can drag and drop pretty much anywhere except the boundaries where the group header is placed or either side of a group of tiles.
If you mean sorting the tiles automatically you can't do that yet, I say yet as I'm not aware of it being in the creators update (someone correct me if I'm wrong) however if you put it in the feedback app and it picks up enough votes I don't see why Microsoft wouldnot add that functionality.