examples: remove docs about non-existent XML files
examples: remove docs about non-existent XML files

The docs refers to XML files that don't exist in the python binding
since it was split off from the main libvirt.git repo.

Fixes #3
Signed-off-by: Daniel P. Berrangé <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

libvirt/libvirt-python,libvirt/libvirt-python,libvirt/libvirt-python