delete perfect scrollbar from build

build/configs/webexcel.json

@@ -180,9 +180,7 @@
                 "../../web-apps/vendor/xregexp/xregexp-all-min.js",
                 "../../web-apps/vendor/jszip/jszip.min.js",
                 "../../web-apps/vendor/jszip-utils/jszip-utils.min.js",
-                "../../web-apps/vendor/jsrsasign/jsrsasign-latest-all-min.js",
-                "../../web-apps/vendor/perfect-scrollbar/src/jquery.mousewheel.js",
-                "../../web-apps/vendor/perfect-scrollbar/src/perfect-scrollbar.js"
+                "../../web-apps/vendor/jsrsasign/jsrsasign-latest-all-min.js"
             ],
             "map": "sdk-all.js.map",
             "log": "../cell/Build/Log"

cell/SpreadsheetTestMenu.html

@@ -21,11 +21,6 @@
 <script type="text/javascript" src="menu/js/ui.spinner.min.js"></script>
 <script type="text/javascript" src="../../../vendor/XRegExp/xregexp-all.js"></script>
 
-<!-- scroll -->
-<link rel="stylesheet" type="text/css" href="menu/perfect-scrollbar/perfect-scrollbar.css" />
-<script type="text/javascript" src="menu/perfect-scrollbar/jquery.mousewheel.js"></script>
-<script type="text/javascript" src="menu/perfect-scrollbar/perfect-scrollbar.js"></script>
-
 <script type="text/javascript">
     //<![CDATA[
     window.g_debug_mode = false;