Stop recommending python33

https://lists.fedoraproject.org/archives/list/python-devel@lists.fedoraproject.org/message/VTOQDUSGTMGOZOJHK4Y6GNVVLHA36QEC/

python-tox.spec

@@ -39,7 +39,6 @@ BuildRequires:  python3-setuptools_scm
 # Recommend "all the Pythons"
 Recommends:     python26
 Recommends:     python27
-Recommends:     python33
 Recommends:     python34
 Recommends:     python35
 Recommends:     python36
@@ -100,6 +99,7 @@ TOXENV=py%{python3_version_nodots} %{__python3} setup.py test
 %changelog
 * Tue May 15 2018 Miro Hrončok <mhroncok@redhat.com> - 2.9.1-6
 - Remove the python2 version once again
+- Stop recommending python33 (it's retired)
 
 * Mon May 07 2018 Miro Hrončok <mhroncok@redhat.com> - 2.9.1-5
 - Add python2 back, see #1575667