Issue #19872: remove unused imports in pathlib. Patch by Vajrasky Kok.
diff --git a/Lib/pathlib.py b/Lib/pathlib.py
index 49859eb..73bf9df 100644
--- a/Lib/pathlib.py
+++ b/Lib/pathlib.py
@@ -6,19 +6,12 @@
import posixpath
import re
import sys
-import weakref
-try:
- import threading
-except ImportError:
- import dummy_threading as threading
-
-from collections import Sequence, defaultdict
+from collections import Sequence
from contextlib import contextmanager
from errno import EINVAL, ENOENT
-from itertools import chain, count
from operator import attrgetter
from stat import S_ISDIR, S_ISLNK, S_ISREG, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO
-from urllib.parse import quote as urlquote, quote_from_bytes as urlquote_from_bytes
+from urllib.parse import quote_from_bytes as urlquote_from_bytes
supports_symlinks = True