remove more dead code

www/common/rewrite-css.js

@@ -1,12 +0,0 @@
-define([
-    '/api/config',
-], function (Config) {
-    var urlArgs = Config && Config.requireConf && Config.requireConf.urlArgs;
-    if (!urlArgs) { return; }
-    document.querySelectorAll('link[rel="stylesheet"][data-rewrite-href]').forEach(function (e) {
-        var href = e.getAttribute('data-rewrite-href');
-		href += (/\?/.test(href)?'&':'?') + urlArgs;
-        e.setAttribute('href', href);
-    });
-});
-