Get rid of MapboxGlPlatform.getInstance

Author: shroff

example/lib/generated_plugin_registrant.dart

@@ -2,6 +2,7 @@
 // Generated file. Do not edit.
 //
 
+// ignore_for_file: directives_ordering
 // ignore_for_file: lines_longer_than_80_chars
 
 import 'package:location_web/location_web.dart';