libvirt: drop changes merged upstream

libvirt: Changes merged upstream
http://git.yoctoproject.org/cgit/cgit.cgi/meta-virtualization/
3a14c0a41a8e08f70b866e0128c7006c82245cc1
655ca30099fcd47a878d63d2d80a79174c1ff8ff

Signed-off-by: Shrikant Bobade <Shrikant_Bobade@mentor.com>
Merge pull request #288 from sbobade/libvrtdropupstream

libvirt: drop changes merged upstream