Remove oslosphinx/latest link
Remove oslosphinx/latest link

oslosphinx is retired, don't link anymore to it.

Change-Id: I462d803fe8f5ba518b64ee3bee51429a86dced5e

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals