IPA can no longer be installed on them, other projects will follow.
Leave the jobs in place for projects that consume them.
Publish Stream 9 images (we'll need to clean up tarballs.o.o later).
Also force using Python 3.9 for tinyipa.
Change-Id: I350c563c1c4ab60ac10d7c9e4bb0715bfde1b1db