diff --git a/cybozulabs-md5/index.d.ts.orig b/cybozulabs-md5/index.d.ts.orig
deleted file mode 100644
index 6e1f31739d..0000000000
--- a/cybozulabs-md5/index.d.ts.orig
+++ /dev/null
@@ -1,11 +0,0 @@
-// Type definitions for CybozuLabs.MD5
-// Project: http://labs.cybozu.co.jp/blog/mitsunari/2007/07/md5js_1.html
-// Definitions by: MIZUNE Pine <https://github.com/pine613>
-// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-
-declare namespace CybozuLabs.MD5 {
-    var VERSION: string;
-    var BY_ASCII: number;
-    var BY_UTF16: number;
-    function calc(str: string, option?: number): string;
-}