deleteClothingItem static method
删除衣物
Implementation
static Future<void> deleteClothingItem(String itemId) async {
final prefs = await SharedPreferences.getInstance();
final items = await getAllClothingItems();
items.removeWhere((item) => item.id == itemId);
final jsonList = items.map((item) => item.toJson()).toList();
await prefs.setString(_keyClothingItems, jsonEncode(jsonList));
}