Hey Bys16,
What are you trying to achieve with deleting the files? Are you using a child theme for your file edits? If not you really should. You can read about and download one from here:
http://www.kadencethemes.com/child-themes/
If you are making edits to your theme files directly and have broken something, then I suggest simply deleting the theme, and re-downloading it from ww.wp.xz.cn.
Then reinstall the theme to your wordpress, and you’ll have all of the original files retained.
-Kevin