fix: file.delete返回值被忽略

Signed-off-by: runphp <runphp@qq.com>

ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/file/FileUtils.java

@@ -97,8 +97,7 @@ public class FileUtils
         // 路径为文件且不为空则进行删除
         if (file.isFile() && file.exists())
         {
-            file.delete();
-            flag = true;
+            flag = file.delete();
         }
         return flag;
     }