Google Maps Polyline - How do I remove it?

Question

So I checked previous questions regarding this, which all relate to V2, which is of no help.

So, I create two markers, save them in an array as markers[\"to\"] and m

Answer 1

function traffic(map){
 // polyline
 this.path=null;
 this.map = google.maps.Map(ele, opt);
}
traffic.prototype._draw = function()
{
    //create new polyline
    var path = new google.maps.Polyline({
        path: this.get('latlngArr'),
        strokeColor: "#FF0000",
        strokeOpacity: 1.0,
        strokeWeight: 2
    });
    //delete old
    var prepath = this.path;
    if(prepath){
        prepath.setMap(null);
    }
    //new polyline
    path.setMap(this.map);

    this.path = path;
}