删除idea自动生成无用代码并更新版本

Author: JavaCodeMing

Spring-Boot-Mail/src/test/java/com/example/mail/SpringBootMailApplicationTests.java

@@ -1,11 +1,8 @@
 package com.example.mail;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
-@RunWith(SpringRunner.class)
 @SpringBootTest
 public class SpringBootMailApplicationTests {