bpo-31370: Remove support for threads-less builds (#3385)
* Remove Setup.config
* Always define WITH_THREAD for compatibility.
diff --git a/Lib/functools.py b/Lib/functools.py
index 23ad160..25075de 100644
--- a/Lib/functools.py
+++ b/Lib/functools.py
@@ -22,13 +22,7 @@
from types import MappingProxyType
from weakref import WeakKeyDictionary
from reprlib import recursive_repr
-try:
- from _thread import RLock
-except ImportError:
- class RLock:
- 'Dummy reentrant lock for builds without threads'
- def __enter__(self): pass
- def __exit__(self, exctype, excinst, exctb): pass
+from _thread import RLock
################################################################################