Remove spec added for an example to render
Remove spec added for an example to render

We have actual backlog specs now, so this is no longer needed to ensure
backlog specs render properly.

Change-Id: I1b02789840aa16e08f5081058e803169eac6b759

bcornec/ironic-specs,openstack/ironic-specs,naterh/ironic-specs,NaohiroTamura/ironic-specs