Remove python2 jobs from zuul for this repo

The python2.7 jobs will no longer be executed as part
of the zuul check and gate.

The nodeset with the python2.7 interpreter has been
updated around Feb 5th 2023.

Story: 2010531
Task: 47310
Signed-off-by: Al Bailey <al.bailey@windriver.com>
Change-Id: Ic5fffbde73a4f7aaddfd0086efa7e4c1d9f8b25f

.zuul.yaml

@@ -9,7 +9,6 @@
       jobs:
         - openstack-tox-linters
         - stx-distcloud-tox-pep8
-        - stx-distcloud-tox-py27
         - stx-distcloud-tox-py39
         - stx-distcloud-tox-pylint
         - stx-distcloud-tox-pep8-debian
@@ -18,7 +17,6 @@
       jobs:
         - openstack-tox-linters
         - stx-distcloud-tox-pep8
-        - stx-distcloud-tox-py27
         - stx-distcloud-tox-py39
         - stx-distcloud-tox-pylint
         - stx-distcloud-tox-pep8-debian
@@ -27,20 +25,6 @@
       jobs:
         - stx-distcloud-upload-git-mirror
 
-- job:
-    name: stx-distcloud-tox-py27
-    parent: tox
-    description: Run py27 for distcloud
-    nodeset: ubuntu-xenial
-    required-projects:
-      - starlingx/fault
-      - starlingx/nfv
-      - starlingx/update
-      - starlingx/config
-    vars:
-      tox_envlist: py27
-      tox_extra_args: -c distributedcloud/tox.ini
-
 - job:
     name: stx-distcloud-tox-py39
     parent: tox-py39