[Bugfix] 修复可能引起的创建外键失败

apps/perms/models.py

@@ -88,5 +88,4 @@ class NodePermission(OrgModelMixin):
         return "{}:{}:{}".format(self.node.value, self.user_group.name, self.system_user.name)
 
     class Meta:
-        unique_together = ('node', 'user_group', 'system_user')
         verbose_name = _("Asset permission")