diff --git a/js/pure-js-lib/mashiro.js b/js/pure-js-lib/mashiro.js
deleted file mode 100644
index fd3c91f..0000000
--- a/js/pure-js-lib/mashiro.js
+++ /dev/null
@@ -1,7 +0,0 @@
-function hasClass(el, className) {
-    if (el.classList)
-        var e = el.classList.contains(className);
-    else
-        var e = new RegExp('(^| )' + className + '( |$)', 'gi').test(el.className);
-    return e;
-}
\ No newline at end of file