revert PHP4 constructor

libs/Smarty.class.php

@@ -665,15 +665,6 @@ class Smarty extends Smarty_Internal_TemplateBase {
         }
     }
 
-
-    /**
-    * Throw error when using PHP 4 style constructor
-    */
-    public function Smarty()
-    {
-         throw new SmartyException("PHP5 requires you to call __construct() instead of Smarty()");
-    }
-
     /**
     * Check if a template resource exists
     *