How to remove cross under marker dragging in ionic

Ionic Framework ionic-v3
1

I have implemented ionic map. When I drag the marker, it shows as × cross under the marker. I have found out that I have to use raiseOnDrag feature, but it shows error.

Typescript Error Argument of type ‘{ zoom: number; center: LatLng; mapTypeControl: false; streetViewControl: false; disableDefaultUI…’ is not assignable to parameter of type ‘MapOptions’. Object literal may only specify known properties, and ‘raiseOnDrag’ does not exist in type ‘MapOptions’.

initializeMap() {
    let image = 'assets/img/marker3.png';
    let minZoomLevel = 15;
    Geolocation.getCurrentPosition().then((position) => {
        this.map = new google.maps.Map(document.getElementById('map_canvas'), {
        zoom: minZoomLevel,
        center: new google.maps.LatLng(position.coords.latitude, position.coords.longitude),
        raiseOnDrag: false, 
        mapTypeControl: false,
        streetViewControl: false,
        disableDefaultUI: true,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    });
});