Drop lower-constraints.txt and its testing

As discussed in TC PTG[1] and TC resolution[2], we are
dropping the lower-constraints.txt file and its testing.
We will keep lower bounds in the requirements.txt file but
with a note that these are not tested lower bounds and we
try our best to keep them updated.

[1] https://etherpad.opendev.org/p/tc-zed-ptg#L326
[2] https://governance.openstack.org/tc/resolutions/20220414-drop-lower-constraints.html#proposal

Change-Id: I608df95c8dff92e7f7e176cca44f8111982948c8

lower-constraints.txt

@@ -1,54 +0,0 @@
-asn1crypto==0.23.0
-bandit==1.4.0
-cffi==1.14.0
-cliff==2.8.0
-coverage==4.0
-cryptography==3.0
-decorator==4.4.1
-deprecation==1.0
-doc8==0.6.0
-dogpile.cache==0.6.5
-extras==1.0.0
-fixtures==3.0.0
-idna==2.6
-jmespath==0.9.0
-jsonpatch==1.16
-jsonpointer==1.13
-jsonschema==2.6.0
-keystoneauth1==3.18.0
-linecache2==1.0.0
-mccabe==0.6.1
-msgpack-python==0.5.6
-munch==2.1.0
-netifaces==0.10.4
-openstacksdk==0.53.0
-os-service-types==1.7.0
-osc-lib==1.14.1
-oslo.config==5.2.0
-oslo.serialization==2.18.0
-oslo.utils==3.33.0
-oslotest==3.2.0
-pbr==2.0.0
-positional==1.2.1
-pycparser==2.18
-Pygments==2.2.0
-pylint==2.5.3
-pyOpenSSL==19.1.0
-pyperclip==1.5.27
-python-cinderclient==3.3.0
-python-glanceclient==2.8.0
-python-keystoneclient==3.8.0
-python-mimeparse==1.6.0
-python-neutronclient==6.7.0
-python-novaclient==9.1.0
-python-openstackclient==3.12.0
-python-subunit==1.0.0
-requests==2.14.2
-requests-mock==1.2.0
-rfc3986==0.3.1
-stestr==2.0.0
-testscenarios==0.4
-testtools==2.2.0
-traceback2==1.4.0
-unittest2==1.1.0
-warlock==1.2.0

requirements.txt

@@ -1,3 +1,7 @@
+# Requirements lower bounds listed here are our best effort to keep them up to
+# date but we do not test them so no guarantee of having them all correct. If
+# you find any incorrect lower bounds, let us know or propose a fix.
+
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.

tox.ini

@@ -130,12 +130,6 @@ extension =
 paths =
   ./octaviaclient/hacking
 
-[testenv:lower-constraints]
-deps =
-  -c{toxinidir}/lower-constraints.txt
-  -r{toxinidir}/test-requirements.txt
-  -r{toxinidir}/requirements.txt
-
 [testenv:requirements]
 deps =
   -egit+https://opendev.org/openstack/requirements#egg=openstack-requirements

zuul.d/projects.yaml

@@ -2,7 +2,6 @@
     templates:
       - check-requirements
       - openstack-cover-jobs
-      - openstack-lower-constraints-jobs
       - openstack-python3-zed-jobs
       - openstackclient-plugin-jobs
       - publish-openstack-docs-pti