删除冗余

yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/appnotify/AppNotifySendServiceImpl.java

@@ -340,12 +340,4 @@ public class AppNotifySendServiceImpl implements AppNotifySendService {
         return notifyMessage;
     }
 
-    public static void main(String[] args) {
-            String aa = "";
-        TreeSet<String> strings = new TreeSet<>(new ArrayList<>(Arrays.asList(aa.split(","))));
-        System.out.println(strings);
-
-    }
-
-
 }