Revert "xmlrpc: Parsing error logging enhancement - vdsClient"

This reverts commit d7a6bd9c3d5593263692616fa0d92f047 which broke
vdsClient. While cannot continue to deliberate about the proper solution
while vdsClient is still broken.

Change-Id: I3fce8005c47b608235e76f365fbf5bd17925d17a
Bug-Url: https://bugzilla.redhat.com/1032419
Signed-off-by: Dan Kenigsberg <danken@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/21489
Reviewed-by: Federico Simoncelli <fsimonce@redhat.com>
Reviewed-by: Nir Soffer <nsoffer@redhat.com>
Reviewed-by: Michal Skrivanek <michal.skrivanek@redhat.com>