Cleanup py27 support

This repo is now testing only with Python 3, so let's make
a few cleanups:
- Remove python 2.7 stanza from setup.py
- Remove obsolete sections from setup.cfg
- Cleanup doc/source/conf.py to remove now obsolete content.

Change-Id: I020ffd888a6351a0d5112dd6969ad800c502dbab

doc/source/conf.py

@@ -64,11 +64,6 @@ role_name = 'os_neutron'
 target_name = 'openstack-ansible-' + role_name
 title = 'OpenStack-Ansible Documentation: ' + role_name + ' role'
 
-# The link to the browsable source code (for the left hand menu)
-oslosphinx_cgit_link = (
-    'https://opendev.org/openstack/{}'.format(target_name)
-)
-
 # openstackdocstheme options
 repository_name = 'openstack/' + target_name
 bug_project = "openstack-ansible"

setup.cfg

@@ -11,14 +11,3 @@ classifier =
     Intended Audience :: System Administrators
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
-
-[build_sphinx]
-all_files = 1
-build-dir = doc/build
-source-dir = doc/source
-
-[pbr]
-warnerrors = True
-
-[wheel]
-universal = 1

setup.py

@@ -13,17 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
-# In python < 2.7.4, a lazy loading of package `pbr` will break
-# setuptools if some other modules registered functions in `atexit`.
-# solution from: http://bugs.python.org/issue15881#msg170215
-try:
-    import multiprocessing  # noqa
-except ImportError:
-    pass
-
 setuptools.setup(
     setup_requires=['pbr>=2.0.0'],
     pbr=True)