pylint: Fix useless-suppression

Cleanup up no longer used Pylint's disables where possible.

Fixes: https://pagure.io/freeipa/issue/9117
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipapython/ssh.py

@@ -26,7 +26,7 @@ import base64
 import re
 import struct
 from hashlib import sha1
-from hashlib import sha256  # pylint: disable=E0611
+from hashlib import sha256
 
 import six