Wrong requirement for `pear/PDO`

[phansys]

AFAIK, pear/PDO is no longer maintained, as it was moved long time ago to the PHP core.
Nevertheless, this package is still defines that requirement (even in the most recent releases):

pecl-database-pdo_ibm/package.xml

Lines 165 to 168 in 7bf08bb

	<package>
	<name>PDO</name>
	<channel>pear.php.net</channel>
	</package>