如何在flutter中删除单例共享首选项的数据？

dependencies:
  shared_preferences: ^2.0.8

import 'package:shared_preferences/shared_preferences.dart';

SharedPreferences prefs = await SharedPreferences.getInstance();

prefs.remove('key');

prefs.clear();

import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: ElevatedButton(
            child: Text('Delete Data'),
            onPressed: () async {
              SharedPreferences prefs = await SharedPreferences.getInstance();
              prefs.remove('key'); // 删除特定的键值对
              // prefs.clear(); // 删除所有的键值对
            },
          ),
        ),
      ),
    );
  }
}

void main() {
  runApp(MyApp());
}