remove test

Author: yangshangzhi

test/flutter_custom_dialog_test.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:flutter_custom_dialog/flutter_custom_dialog.dart';
 
 void main() {
   const MethodChannel channel = MethodChannel('flutter_custom_dialog');
@@ -15,7 +14,4 @@ void main() {
     channel.setMockMethodCallHandler(null);
   });
 
-  test('getPlatformVersion', () async {
-    expect(await FlutterCustomDialog.platformVersion, '42');
-  });
 }