Added code to remove existing `2017-07-19.parks.geojson` to work around error `ERROR 6: The GeoJSON driver does not overwrite existing files.`
Added code to remove existing `2017-07-19.parks.geojson` to work around error `ERROR 6: The GeoJSON driver does not overwrite existing files.`

CodeforHawaii/ACLU,CodeforHawaii/ACLU,CodeforHawaii/ACLU,CodeforHawaii/ACLU