remove few unused fields in demo scripts to get rid of warning messages

Author: brnkhy

Runtime/Mapbox/DirectionsApi/Samples~/DirectionsApiDemo/Scripts/DirectionScript.cs

@@ -37,7 +37,6 @@ public class DirectionScript : MonoBehaviour
 		private GameObject startMarker;
 		private GameObject finishMarker;
 		private List<GameObject> _gos;
-		private float _goScale = 50;
 		private Material _material;
 
 		public RoutingProfile.RoutingProfileOptions RoutingOption;

Runtime/Mapbox/GeocodingApi/Samples~/GeocodingApiDemo/Geocoder.cs

@@ -28,8 +28,6 @@ public class Geocoder : MonoBehaviour
     private LatitudeLongitude FirstLatLng;
     private Vector3 SecondPoint;
     private LatitudeLongitude SecondLatLng;
-    private bool IsFirstPointSet = false;
-    private bool IsSecondPointSet = false;
     private string _currentValue;
 
     public void Start()