fs: Remove microbit-universal-hex library as it's embedded in microbit-fs.

Author: microbit-carlos

editor.html

@@ -429,8 +429,7 @@ <h2 id="modal-msg-title"></h2>
         <script src="static/js/custom-event-polyfill.js"></script>
         <script src="static/js/lzma-d.min.js"></script>
         <script src="static/js/base64.js"></script>
-        <script src="static/js/microbit-fs.umd.js"></script>
-        <script src="static/js/microbit-uh.umd.js"></script>
+        <script src="static/js/microbit-fs.umd.min.js"></script>
         <script src="lang/en.js" id="lang"></script>
         <script src="js/micropythonapi.js"></script>
         <script src="js/urlparser.js"></script>