Why remove the platforms??? 

Recognized roles are 'stop' not 'stop_on_demand', 'stop_entry_only' and 'stop_exit_only' - all rejected by QA tools... see https://tools.geofabrik.de/osmi/?view=pubtrans_routes&lon=148.82043&lat=-33.21512&zoom=9&baselayer=Geofabrik%20Standard&overlays=ptv2_routes_valid%2Cptv2_routes_invalid%2Cptv2_error_ways%2Cptv2_error_nodes%2Cptv2_routes_valid%2Cptv2_routes_invalid%2Cptv2_error_ways%2Cptv2_error_nodes