core-bundle/src/Resources/contao/library/Contao/Search.php
public static function removeEntry($strUrl)
	{
		$objDatabase = Database::getInstance();

		$objResult = $objDatabase->prepare("SELECT id FROM tl_search WHERE url=?")
								 ->execute($strUrl);

		while ($objResult->next())
		{
			$objDatabase->prepare("DELETE FROM tl_search WHERE id=?")
						->execute($objResult->id);

			$objDatabase->prepare("DELETE FROM tl_search_index WHERE pid=?")
						->execute($objResult->id);
		}
	}
public static function removeEntry($strUrl)
	{
		$objDatabase = Database::getInstance();

		$objResult = $objDatabase->prepare("SELECT id FROM tl_search WHERE url=?")
								 ->execute($strUrl);

		while ($objResult->next())
		{
			$objDatabase->prepare("DELETE FROM tl_search WHERE id=?")
						->execute($objResult->id);

			$objDatabase->prepare("DELETE FROM tl_search_index WHERE pid=?")
						->execute($objResult->id);
		}
	}
Remove an entry from the search index

@param string $strUrl The URL to be removed