Move the timezone setting into the core file.

laravel/laravel.php

@@ -7,13 +7,6 @@
  */
 require 'core.php';
 
-/**
- * Register the default timezone for the application. This will be
- * the default timezone used by all date / timezone functions in
- * the entire application.
- */
-date_default_timezone_set(Config::$items['application']['timezone']);
-
 /**
  * Create the exception logging function. All of the error logging
  * is routed through here to avoid duplicate code. This Closure