BUG-731: remove XmlToNodes class

This is an unused class and it is a heavy offender. Let's just remove
it.

Change-Id: I04fd2f5d1426fc8bd54fe13e751845285c092a1c
Signed-off-by: Robert Varga <rovarga@cisco.com>
(cherry picked from commit 17c58e1b830347476f792fc9c5bc8661612f9966)
Signed-off-by: Robert Varga <rovarga@cisco.com>