from ldb import ERR_CONSTRAINT_VIOLATION
from ldb import ERR_OPERATIONS_ERROR
from ldb import Message, MessageElement, Dn
-from ldb import FLAG_MOD_REPLACE, FLAG_MOD_ADD, FLAG_MOD_DELETE
-from samba.ndr import ndr_pack, ndr_unpack
-from samba.dcerpc import security, drsuapi, misc, netlogon, nbt
+from ldb import FLAG_MOD_REPLACE, FLAG_MOD_ADD
+from samba.dcerpc import security, drsuapi, misc
from samba.auth import system_session
-from samba import gensec, sd_utils, join
+from samba import gensec, sd_utils
from samba.samdb import SamDB
from samba.credentials import Credentials
import samba.tests