Remove includes and parameter functions

We no longer are support parameter functions and includes for zuulv3.
However, we may reclaim includes in the future so we can support raw
inclusions, so everything does not have to be in one file.

Story: #2000784

Change-Id: I58608ae564a890bca19eef63d9ae73fa388adf39
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
5 files changed