remove unicode from code

Change-Id: I1f602209937866a44106129f3167fc659f657524
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 5c8d823..f3659c2 100755
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -37,8 +37,8 @@
 master_doc = 'index'
 
 # General information about the project.
-project = u'openstack'
-copyright = u'2017, OpenStack Developers'
+project = 'openstack'
+copyright = '2017, OpenStack Developers'
 
 # openstackdocstheme options
 repository_name = 'openstack/manila-tempest-plugin'
@@ -73,8 +73,8 @@
 latex_documents = [
     ('index',
      '%s.tex' % project,
-     u'%s Documentation' % project,
-     u'OpenStack Developers', 'manual'),
+     '%s Documentation' % project,
+     'OpenStack Developers', 'manual'),
 ]
 
 # Example configuration for intersphinx: refer to the Python standard library.