Disconnect the AZURE target from the CLOUDWARE list.

Microsoft has graciously overtaken publication of FreeBSD
on Azure since 10.3-RELEASE.

Many thanks to Microsoft for their support of FreeBSD on
Azure.

Disconnect the OPENSTACK target from the CLOUDWARE list.

This was reported to not work as expected, and feedback
following the report was never received.  In addition, we
do not publish these anywhere publicly.