修改志愿者 显示规则

@@ -412,6 +412,7 @@ class IndexController extends RestBaseController
            $join1[$k]['duty']=$work_content[$v['work_content']-1]??'';
         }
        $activity['join']=$join1;
+       $activity['time']='';
 
         $this->success('获取成功！',$activity);
     }