remove job settings for octavia repositories
remove job settings for octavia repositories

This is a mechanically generated patch to remove the job settings that
have been migrated to the git repositories owned by the octavia team.

See the python3-first goal document for details:
https://governance.openstack.org/tc/goals/stein/python3-first.html

Change-Id: I4fb577418e6813ba81d521689fea5c791faa15fd
Story: #2002586
Task: #24316

openstack-infra/project-config,openstack-infra/project-config