pfPorts: Remove pecl-radius port, directly use FreeBSD ports.

We had a unmodified port, upstream still ships same version,
but includes a PHP 5.4 patch.

Now directly use their port which reduces churn once we switch
to this version of PHP.

Additional note:
The extra patch in FreeBSD should not disturb us with 5.3 since it only replaces function_entry with zend_function_entry which seems to have been around for quite some time, even pre-5.3.