Remove `ReferalMiddleware`, dead code.

services/web/app/coffee/Features/Referal/ReferalMiddleware.coffee

@@ -1,12 +0,0 @@
-User = require("../../models/User").User
-AuthenticationController = require('../Authentication/AuthenticationController')
-
-# TODO: module appears to be dead, consider removal
-module.exports = RefererMiddleware =
-	getUserReferalId: (req, res, next) ->
-		if AuthenticationController.isUserLoggedIn()
-			user = AuthenticationController.getSessionUser(req)
-			req.user.referal_id = user.referal_id
-			next()
-		else
-			next()

services/web/app/coffee/router.coffee

@@ -11,7 +11,6 @@ SubscriptionRouter = require './Features/Subscription/SubscriptionRouter'
 UploadsRouter = require './Features/Uploads/UploadsRouter'
 metrics = require('./infrastructure/Metrics')
 ReferalController = require('./Features/Referal/ReferalController')
-ReferalMiddleware = require('./Features/Referal/ReferalMiddleware')
 AuthenticationController = require('./Features/Authentication/AuthenticationController')
 TagsController = require("./Features/Tags/TagsController")
 NotificationsController = require("./Features/Notifications/NotificationsController")
@@ -77,7 +76,7 @@ module.exports = class Router
 
 
 		if Settings.enableSubscriptions
-			webRouter.get  '/user/bonus', AuthenticationController.requireLogin(), ReferalMiddleware.getUserReferalId, ReferalController.bonus
+			webRouter.get  '/user/bonus', AuthenticationController.requireLogin(), ReferalController.bonus
 
 		webRouter.get '/blog', BlogController.getIndexPage
 		webRouter.get '/blog/*', BlogController.getPage