Remove publish-openstack-octavia-amphora-image jobs

These jobs run only in master. The current definition is causing
the following warnings.

  All regular expressions must conform to RE2 syntax, but an
  expression using the deprecated Perl-style syntax has been detected.
  Adjust the configuration to conform to RE2 syntax.

  The RE2 syntax error is: invalid perl operator: (?!

Change-Id: I5c882abd9ed2f36ae6ef70279f98a157d9910fd8

zuul.d/jobs.yaml

@@ -1,43 +1,3 @@
-- job:
-    name: publish-openstack-octavia-amphora-image
-    parent: publish-openstack-artifacts
-    run: playbooks/image-build/run.yaml
-    post-run: playbooks/image-build/post.yaml
-    required-projects:
-        - openstack/diskimage-builder
-        - openstack/octavia
-        - openstack/octavia-lib
-
-- job:
-    name: publish-openstack-octavia-amphora-image-focal
-    parent: publish-openstack-octavia-amphora-image
-    nodeset: ubuntu-focal
-    description: |
-      Publish Ubuntu Focal (20.04) based amphora image to tarballs.o.o.
-    vars:
-        amphora_os: ubuntu
-        amphora_os_release: focal
-
-- job:
-    name: publish-openstack-octavia-amphora-image-jammy
-    parent: publish-openstack-octavia-amphora-image
-    nodeset: ubuntu-jammy
-    description: |
-      Publish Ubuntu Jammy (22.04) based amphora image to tarballs.o.o.
-    vars:
-        amphora_os: ubuntu
-        amphora_os_release: jammy
-
-- job:
-    name: publish-openstack-octavia-amphora-image-centos-9-stream
-    nodeset: centos-9-stream
-    parent: publish-openstack-octavia-amphora-image
-    description: |
-      Publish CentOS 9 Stream based amphora image to tarballs.o.o.
-    vars:
-        amphora_os: centos
-        amphora_os_release: 9-stream
-
 - job:
     name: octavia-grenade
     parent: grenade

zuul.d/projects.yaml

@@ -118,10 +118,6 @@
         - octavia-grenade
     periodic:
       jobs:
-        - publish-openstack-octavia-amphora-image-focal:
-            branches: ^(?!stable/.*).*$
-        - publish-openstack-octavia-amphora-image-centos-9-stream:
-            branches: ^(?!stable/.*).*$
         - octavia-amphora-image-build
 # Putting octavia-v2-dsvm-scenario-fips in periodic as centos 8 is too slow
         - octavia-v2-dsvm-scenario-fips: