Remove lower-constraints job

As discussed during the upstream ironic community meeting on
Monday Dec 14 2020, the lower-constraints job is being removed.

Change-Id: Ide0f6c38a59ae6486fa33cfb19b383d022e57d5a

lower-constraints.txt

@@ -1,86 +0,0 @@
-alabaster==0.7.10
-appdirs==1.4.3
-Babel==2.5.3
-bashate==0.5.1
-certifi==2018.1.18
-cffi==1.14.0
-chardet==3.0.4
-cliff==3.1.0
-coverage==4.0
-cryptography==2.3
-debtcollector==1.19.0
-doc8==0.6.0
-docutils==0.14
-dulwich==0.19.0
-eventlet==0.18.2
-extras==1.0.0
-fasteners==0.14.1
-fixtures==3.0.0
-future==0.16.0
-gitdb==4.0.4
-GitPython==3.1.1
-greenlet==0.4.15
-ifaddr==0.1.6
-imagesize==1.0.0
-ironic-lib==4.1.0
-iso8601==0.1.12
-Jinja2==2.10
-keystoneauth1==3.4.0
-linecache2==1.0.0
-MarkupSafe==1.1.1
-monotonic==1.4
-mox3==0.25.0
-msgpack-python==0.5.6
-netaddr==0.7.19
-netifaces==0.10.4
-openstackdocstheme==2.2.1
-os-client-config==1.29.0
-oslo.concurrency==3.26.0
-oslo.config==5.2.0
-oslo.context==2.20.0
-oslo.i18n==3.20.0
-oslo.log==3.36.0
-oslo.serialization==2.18.0
-oslo.service==1.24.0
-oslo.utils==3.33.0
-oslotest==3.2.0
-Paste==2.0.3
-PasteDeploy==1.5.2
-pbr==2.0.0
-Pint==0.5
-psutil==3.2.2
-pycparser==2.18
-Pygments==2.2.0
-pyinotify==0.9.6
-pyparsing==2.2.0
-python-dateutil==2.7.0
-python-mimeparse==1.6.0
-python-subunit==1.2.0
-pytz==2018.3
-pyudev==0.18
-PyYAML==3.12
-reno==3.1.0
-repoze.lru==0.7
-requests==2.14.2
-requestsexceptions==1.4.0
-restructuredtext-lint==1.1.3
-rfc3986==1.1.0
-Routes==2.4.1
-rtslib-fb==2.1.65
-six==1.14.0
-smmap==3.0.2
-snowballstemmer==1.2.1
-Sphinx==2.0.0
-sphinxcontrib-websupport==1.0.1
-stestr==1.0.0
-stevedore==1.20.0
-tenacity==6.2.0
-testrepository==0.0.20
-testtools==2.2.0
-traceback2==1.4.0
-unittest2==1.1.0
-urllib3==1.22
-WebOb==1.7.4
-Werkzeug==1.0.1
-wrapt==1.10.11
-zeroconf==0.26.0

zuul.d/project.yaml

@@ -1,7 +1,6 @@
 - project:
     templates:
       - openstack-python3-wallaby-jobs
-      - openstack-lower-constraints-jobs
       - openstack-cover-jobs
       - publish-openstack-docs-pti
       - check-requirements