remove useless courses controller

controllers/courses.js

@@ -1,22 +0,0 @@
-/**
-* GET /
-* Home page.
-*/
-var Course = require('./../models/Course')
-
-exports.index = function(req, res) {
-    Course.find(function(err, courses){
-        res.render('course/index', {
-            title: 'Courses',
-            courses: courses
-        });
-    });
-};
-exports.view = function(req, res) {
-    Course.findById(req.param.id, function(err, course){
-        res.render('course/view', {
-            title: 'Course',
-            course: course
-        });
-    });
-};