Remove all of the rpc_release.link files
Remove all of the rpc_release.link files

This removes the link files that are powering the basic pip config
thoughout the stack. The removal is to ensure that there are no
conflicting sources of truth when upgrading from Juno.

Closes-Bug: #1450580
Change-Id: I074f46c9b35793b35cf22ab49dd97f938df0cfac
(cherry picked from commit 0f4b5c9e6e96189a2404a40d45bdc78419b264f7)

yanyao/openstack-deployment,yanyao/openstack-deployment,yanyao/openstack-deployment,yanyao/openstack-deployment,VaneCloud/openstack-ansible,VaneCloud/openstack-ansible,VaneCloud/openstack-ansible