removed default lat/long for map

app/src/main/res/layout/map_view.xml

@@ -5,6 +5,4 @@
     android:id="@+id/mapView"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    mapbox:mapbox_cameraTargetLat="40.7128"
-    mapbox:mapbox_cameraTargetLng="-74.0060"
     mapbox:mapbox_cameraZoom="9.0" />