Remove nonexistent scripts

Should have been removed after 9949000a9e

reader.html

@@ -301,6 +301,4 @@ body {
         </svg>
     </button>
 </div>
-<script src="vendor/zip-no-worker.min.js"></script>
-<script src="vendor/fflate.min.js"></script>
 <script src="reader.js" type="module"></script>