fix: 修改弃用警告

src/test/java/mjkf/xinke/UploadFileTest.java

@@ -1,6 +1,5 @@
 package mjkf.xinke;
 
-import cn.hutool.core.io.FileUtil;
 import mjkf.xinke.dev.modular.file.enums.DevFileEngineTypeEnum;
 import mjkf.xinke.dev.modular.file.service.DevFileService;
 import org.junit.Test;
@@ -14,7 +13,6 @@ import javax.annotation.Resource;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
-import java.net.URLConnection;
 import java.nio.file.Files;
 import java.nio.file.Path;