remove unused function

controllers/auth.php

@@ -4,19 +4,6 @@ function buildRedirectURI() {
   return Config::$base_url . 'auth/callback';
 }
 
-function build_url($parsed_url) {
-  $scheme   = isset($parsed_url['scheme']) ? $parsed_url['scheme'] . '://' : '';
-  $host     = isset($parsed_url['host']) ? $parsed_url['host'] : '';
-  $port     = isset($parsed_url['port']) ? ':' . $parsed_url['port'] : '';
-  $user     = isset($parsed_url['user']) ? $parsed_url['user'] : '';
-  $pass     = isset($parsed_url['pass']) ? ':' . $parsed_url['pass']  : '';
-  $pass     = ($user || $pass) ? "$pass@" : '';
-  $path     = isset($parsed_url['path']) ? $parsed_url['path'] : '';
-  $query    = isset($parsed_url['query']) ? '?' . $parsed_url['query'] : '';
-  $fragment = isset($parsed_url['fragment']) ? '#' . $parsed_url['fragment'] : '';
-  return "$scheme$user$pass$host$port$path$query$fragment";
-}
-
 $app->get('/', function($format='html') use($app) {
   $res = $app->response();