Fixup import sorting.
Automatically generated with `tox -eisort-run`. It's not clear how the
bad sort hit master - CI currently has a shard that runs `tox -v -e
isort-check` and that command properly fails on master.
@@ -11,14 +11,13 @@ import shutil
import stat
import sys
import tempfile
-import time
import threading
+import time
import zipfile
from collections import defaultdict
from datetime import datetime
from uuid import uuid4
-
# We use the start of MS-DOS time, which is what zipfiles use (see section 4.4.6 of
# https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT).
DETERMINISTIC_DATETIME = datetime(
