Delete not needed designate variables.
Delete not needed designate variables.

The varibales are set in designate role defaults with the dependent change.
No need to set them in inventory any more.

Closes-Bug: 1717273
Change-Id: Ia6624b8110f1783133ff30a1ccdafb90f84e1897
Depends-On: I033940c29e91945a96bf9a4a9c9058badac37c5e

bunchc/openstack-ansible,stackforge/os-ansible-deployment,yanyao/openstack-ansible,yanyao/openstack-ansible,cfarquhar/openstack-ansible,openstack/openstack-ansible,openstack/openstack-ansible,cfarquhar/openstack-ansible,bunchc/openstack-ansible,stackforge/os-ansible-deployment