Avoid pulling threading when _thread is sufficient
diff --git a/Lib/reprlib.py b/Lib/reprlib.py
index 092874a..f803360 100644
--- a/Lib/reprlib.py
+++ b/Lib/reprlib.py
@@ -5,7 +5,7 @@
 import builtins
 from itertools import islice
 try:
-    from threading import get_ident
+    from _thread import get_ident
 except ImportError:
     from _dummy_thread import get_ident