修复分类锁的bug

app/Models/GoodsGroup.php

@@ -17,10 +17,6 @@ class GoodsGroup extends BaseModel
         'deleted' => GoodsGroupDeleted::class
     ];
 
-    protected $hidden = [
-        'group_pwd',
-    ];
-
     protected $casts = [
         'is_open_group_pwd' => 'integer',
     ];