Revert "add xss filter"

This reverts commit ca78643264e2fd7ffdcd2d7de326f0fcda67da1c.

src/server/routes/page.js

@@ -150,7 +150,7 @@ module.exports = function(crowi, app) {
   const actions = {};
 
   function getPathFromRequest(req) {
-    return crowi.xss.process(pathUtils.normalizePath(req.params[0] || ''));
+    return pathUtils.normalizePath(req.params[0] || '');
   }
 
   function isUserPage(path) {