Remove setting of version/release from releasenotes

Release notes are version independent, so remove version/release
values. We've found that projects now require the service package
to be installed in order to build release notes, and this is entirely
due to the current convention of pulling in the version information.

Release notes should not need installation in order to build, so this
unnecessary version setting needs to be removed.

This is needed for new release notes publishing, see
I56909152975f731a9d2c21b2825b972195e48ee8 and the discussion starting
at
http://lists.openstack.org/pipermail/openstack-dev/2017-November/124480.html
.

Change-Id: I2aeae04a326a956b0d61b43f0baaaf437e6f9022

releasenotes/source/conf.py

@@ -16,8 +16,6 @@
 import os
 import sys
 
-from kolla_kubernetes.version import version_info as kolla_version
-
 sys.path.insert(0, os.path.abspath('../..'))
 
 
@@ -50,14 +48,12 @@ master_doc = 'index'
 project = u'Kolla Release Notes'
 copyright = u'2015, Kolla developers'
 
-# The version info for the project you're documenting, acts as replacement for
-# |version| and |release|, also used in various other places throughout the
-# built documents.
-#
+# Release notes do not need a version number in the title, they
+# cover multiple releases.
 # The short X.Y version.
-version = kolla_version.canonical_version_string()
+version = ''
 # The full version, including alpha/beta/rc tags.
-release = kolla_version.version_string_with_vcs()
+release = ''
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.