print_theme sets 'variables' and 'render element': only one is used

Doesn't seem to cause any issues but it's an oddity I noticed.

The 'print_node' and 'print' theme definitions defined in hook_theme include the properties 'variables', 'render element' and 'template'.

But 'variables' and 'render element' are mutually exclusive and only one is used ('variables' takes precedence). Ref: http://api.drupal.org/api/drupal/modules--system--system.api.php/functio...

So this function should have the 'render element' lines removed.