remove lower-constraints.txt

[1] http://lists.openstack.org/pipermail/openstack-discuss/2020-December/019390.html

Change-Id: I407b2c9bc6e9c1cd5b070a1cdca7c0eabe19b0ca

lower-constraints.txt

@@ -1,79 +0,0 @@
-alabaster==0.7.10
-appdirs==1.3.0
-certifi==2020.4.5.2
-chardet==3.0.4
-cliff==3.1.0
-cmd2==0.8.9
-coverage==4.0
-debtcollector==1.2.0
-doc8==0.8.1
-docutils==0.11
-dulwich==0.15.0
-entrypoints==0.3
-extras==1.0.0
-fixtures==3.0.0
-future==0.18.2
-gitdb==0.6.4
-GitPython==1.0.1
-idna==2.5
-imagesize==0.7.1
-importlib_metadata==1.7.0
-iso8601==0.1.11
-Jinja2==2.10
-keystoneauth1==3.4.0
-linecache2==1.0.0
-MarkupSafe==1.0
-mock==4.0.2
-monotonic==1.5
-mox3==0.20.0
-msgpack==1.0.0
-mypy==0.720
-mypy-extensions==0.4.3
-netaddr==0.7.18
-netifaces==0.10.9
-openstackdocstheme==1.20.0
-os-client-config==1.28.0
-oslo.context==3.1.0
-oslo.i18n==3.15.3
-oslo.log==3.36.0
-oslo.serialization==3.2.0
-oslo.utils==4.2.0
-oslotest==3.2.0
-packaging==20.4
-pbr==2.0.0
-prettytable==0.7.2
-Pygments==2.2.0
-pyinotify==0.9.6
-pyparsing==2.4.7
-pyperclip==1.8.0
-python-dateutil==2.8.1
-python-mimeparse==1.6.0
-python-subunit==1.0.0
-pytz==2013.6
-PyYAML==3.12
-reno==2.5.0
-requests==2.18.0
-requests-mock==1.5.0
-requestsexceptions==1.2.0
-restructuredtext-lint==1.3.1
-rfc3986==1.2.0
-rst2txt==1.1.0
-six==1.15.0
-smmap==0.9.0
-snowballstemmer==1.2.1
-Sphinx==1.8.0
-sphinxcontrib-apidoc==0.3.0
-sphinxcontrib-websupport==1.0.1
-stestr==2.1.0
-stevedore==1.20.0
-testrepository==0.0.20
-testscenarios==0.4
-testtools==2.2.0
-traceback2==1.4.0
-typed-ast==1.4.1
-typing-extensions==3.7.4.2
-unittest2==1.1.0
-urllib3==1.21.1
-voluptuous==0.11.7
-wcwidth==0.2.4
-wrapt==1.7.0

tox.ini

@@ -22,13 +22,6 @@ commands =
   stestr run --suppress-attachments {posargs}
   stestr slowest
 
-[testenv:lower-constraints]
-deps =
-  -c{toxinidir}/lower-constraints.txt
-  -r{toxinidir}/test-requirements.txt
-  -r{toxinidir}/requirements.txt
-  -r{toxinidir}/doc/requirements.txt
-
 [testenv:pep8]
 commands =
   pre-commit run -a