Removed unusued code and images

controllers/user.js

@@ -154,25 +154,6 @@ exports.postSignup = function(req, res) {
   });
 };
 
-/**
- * POST /signup/available
- * Checks if current username is available
- */
-exports.postAvailability = function(req, res) {
-  User.findOne({ username: req.body.username }, function(err, user) {
-    if (user) {
-      // unavailable
-      // has-error
-      return;
-    } else {
-      // username is available
-      // has-success
-      return;
-    }
-  });
-};
-
-
 /**
  * GET /account/unlink/:provider
  */