pylint: Fix deprecated-class
There is no actual usage of deprecated classes for Python3.
Pylint complains about such for Python2. Since Python2 is no
longer supported these imports were removed.
Fixes: https://pagure.io/freeipa/issue/9117
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>