Remove Python 2 specific documentation references

Co-authored-by: nijel <[email protected]>

Author: Copilot

docs/configuration/porting_from_dsa.rst

@@ -134,7 +134,7 @@ paths aren't valid anymore. Some solutions to this problem are:
             if session_dict['_auth_user_backend'].startswith('social_auth'):
                 session_dict['_auth_user_backend'] = BACKENDS[session_dict['_auth_user_backend']]
                 new_sess = Session.objects.save(sess.session_key, session_dict, sess.expire_date)
-                print 'New session saved {}'.format(new_sess.pk)
+                print('New session saved {}'.format(new_sess.pk))
 
 
 .. _django-social-auth: https://github.com/omab/django-social-auth

docs/installing.rst

@@ -38,10 +38,8 @@ components are:
 Dependencies
 ------------
 
-Dependencies are properly defined in the requirements files; the
-``setup.py`` script will determine the environment where it's
-installed and sort between Python 2 or Python 3 packages if
-needed. There are some ``extras`` defined to install the corresponding
+Dependencies are properly defined in the requirements files.
+There are some ``extras`` defined to install the corresponding
 dependencies since they are required to build extensions that, unless
 used, are undesired.