Remove definition of not-implemented libvirt_storagevolume_delete()
Remove definition of not-implemented libvirt_storagevolume_delete()

vtolstov/libvirt-php,php/pecl-virtualization-libvirt,martijnotto/libvirt-php,libvirt/libvirt-php,libvirt/libvirt-php,tucksaun/libvirt-php,zippy2/libvirt-php,vtolstov/libvirt-php,vtolstov/libvirt-php,php/pecl-virtualization-libvirt,KnightSwarm/libvirt-php,martijnotto/libvirt-php,martijnotto/libvirt-php,libvirt/libvirt-php,KnightSwarm/libvirt-php,KnightSwarm/libvirt-php,zippy2/libvirt-php,php/pecl-virtualization-libvirt,martijnotto/libvirt-php,vtolstov/libvirt-php,tucksaun/libvirt-php,KnightSwarm/libvirt-php,tucksaun/libvirt-php,tucksaun/libvirt-php,php/pecl-virtualization-libvirt,KnightSwarm/libvirt-php,zippy2/libvirt-php