Как удалить в < head> строку подключения favicon? - Joomla 3.x: Общие вопросы

<link href="/templates/шаблон/favicon.ico" rel="shortcut icon" type="image/vnd.microsoft.icon">

//1
$doc = JFactory::getDocument();
foreach ($doc->_links as $k => $array) {
 if ($array['attribs']['type'] == 'image/vnd.microsoft.icon') {
  unset($doc->_links[$k]);		
 }
}

//2
$doc = JFactory::getDocument();
 foreach ( $doc->_links as $k => $array ) {
 if ( $array['relation'] == 'shortcut icon' ) {
 unset($doc->_links[$k]);
 }
}

//3
$doc = JFactory::getDocument();
$head = $this->document->getHeadData();
unset($head['links']['/templates/wtw_alfa2/favicon.ico']);

var_dump ($head);
var_dump ($doc->_links); 

		$doc = JFactory::getDocument();
		$head = $doc->getHeadData();

		$doc = JFactory::getDocument();
		$head = $doc->getHeadData();
		unset($head['links']['/templates/protostar/favicon.ico']);

class plgSystemFaviconremove extends JPlugin
{
public function __construct( & $subject, $config )
  {
    parent::__construct( $subject, $config );
    $this->loadLanguage();
  }

  public function onBeforeRender(){ 

		
    $doc = JFactory::getDocument();		
    $head = $doc->getHeadData();		
    unset($head['links']['/templates/wtw_alfa2/favicon.ico']);
    //var_dump ($head);

  }
}

$doc->setHeadData($head);

 public function onBeforeRender(){


    $doc = JFactory::getDocument();
    $head = $doc->getHeadData();
    unset($head['links']['/templates/wtw_alfa2/favicon.ico']);
  $doc->setHeadData($head);

  }

	public function onBeforeRender()
	{
		$doc  = JFactory::getDocument();
		$head = $doc->getHeadData();

		foreach ($head['links'] as $key => $link)
		{
//			if (preg_match('/favicon/', $key))
//			{
//				unset($head['links'][$key]);
//			}

			if (!empty($link['relation']) && $link['relation'] == 'shortcut icon')
			{
				unset($head['links'][$key]);
			}
		}
		$doc->setHeadData($head);
	}