fix function name and removing comments of localsMiddleware

lib/cartodb/middleware/context/locals.js

@@ -1,8 +1,6 @@
 const _ = require('underscore');
 
-module.exports = function layergroupTokenMiddleware(req, res, next) {
-    // FIXME: Temporary hack to share data between middlewares. Express overrides req.params to
-    // parse url params to an object and it's performed after matching path and controller.
+module.exports = function localsMiddleware(req, res, next) {
     res.locals = {};
     _.extend(res.locals, req.params);