Remove no-ops after coalescing, which will often generate empty moves.
Remove no-ops after coalescing, which will often generate empty moves.

joykuotw/tippecanoe,mapbox/tippecanoe,joykuotw/tippecanoe,mapbox/tippecanoe,mapbox/tippecanoe,mapbox/tippecanoe,landsurveyorsunited/tippecanoe,landsurveyorsunited/tippecanoe