Clean up

Author: aednlaxer

packages/google_maps_flutter/google_maps_flutter/example/lib/main.dart

@@ -33,7 +33,7 @@ import 'tile_overlay.dart';
 
 /// Map Id is required for some examples to use advanced markers
 // ignore: unnecessary_nullable_for_final_variable_declarations, unreachable_from_main
-const String? mapId = 'ffa0cdfef09314e3';
+const String? mapId = null;
 
 final List<GoogleMapExampleAppPage> _allPages = <GoogleMapExampleAppPage>[
   const MapUiPage(),

packages/google_maps_flutter/google_maps_flutter_android/android/gradle/wrapper/gradle-wrapper.properties

@@ -82,8 +82,8 @@ class ScrollingMapBody extends StatelessWidget {
                         target: _center,
                         zoom: 11.0,
                       ),
-                      markers: <AdvancedMarker>{
-                        AdvancedMarker(
+                      markers: <Marker>{
+                        Marker(
                           markerId: const MarkerId('test_marker_id'),
                           position: LatLng(
                             _center.latitude,