[1.6.x] Fixed #20891 -- Removed part of the tutorial that requires pytz
[1.6.x] Fixed #20891 -- Removed part of the tutorial that requires pytz

Thanks AtomicSpark for the report.

Backport of 55339a7669 from master

felixjimenez/django,django-nonrel/django,dex4er/django,felixjimenez/django,django-nonrel/django,django-nonrel/django,redhat-openstack/django,django-nonrel/django,dex4er/django,felixjimenez/django,dex4er/django,redhat-openstack/django,felixjimenez/django,redhat-openstack/django,redhat-openstack/django