Issue #1494676 by Liam Morland: remove unused code: ().

core/includes/bootstrap.inc

@@ -738,7 +738,6 @@ function drupal_settings_initialize() {
   if (isset($base_url)) {
     // Parse fixed base URL from settings.php.
     $parts = parse_url($base_url);
-    $http_protocol = $parts['scheme'];
     if (!isset($parts['path'])) {
       $parts['path'] = '';
     }