Remove python 2.7 from tox configuration

Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>
(cherry picked from commit af10ab312b248052e987ee2c50650e2db85be5e4)

requirements.txt

@@ -1,7 +1,6 @@
 # Some packages must be installed via dnf/yum first, see doc/contributing.rst
 dogpile.cache
-flufl.lock ; python_version >= '3.0'
+flufl.lock
-flufl.lock < 3.0 ; python_version <= '2.7'
 jsonschema
 kobo
 koji
@@ -12,4 +11,3 @@ ordered_set
 productmd
 pykickstart
 python-multilib
-urlgrabber ; python_version < '3.0'

test-requirements.txt

@@ -1,4 +1,3 @@
-mock; python_version < '3.3'
 parameterized
 pytest
 pytest-cov

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = bandit, flake8, black, py27, py3
+envlist = bandit, flake8, black, py3
 
 [testenv:flake8]
 deps =
@@ -26,21 +26,6 @@ commands =
     {[testenv:flake8]commands}
     black --check --diff pungi pungi_utils setup.py tests --exclude tests/_composes
 
-[testenv:py27]
-sitepackages = true
-deps =
-    -rrequirements.txt
-    -rtest-requirements.txt
-allowlist_externals =
-    sh
-    make
-    coverage
-commands =
-    sh -c 'find . -name "*.pyc" -exec rm -f \{\} +'
-    pip install --force-reinstall pytest mock
-    make test-coverage
-    coverage xml
-
 [testenv:py3]
 sitepackages = true
 deps =