Used a regular lock for app registry population.

Since the app registry is always populated before the first request is
processed, the situation described in #18251 for the old app cache
cannot happen any more.

Refs #18251, #21628.

1 files changed, 0 insertions, 13 deletions

diff --git a/django/utils/module_loading.py b/django/utils/module_loading.py
index bd012cd55b..a6fe7aebcb 100644
--- a/django/utils/module_loading.py
+++ b/django/utils/module_loading.py
@@ -1,6 +1,5 @@
 from __future__ import absolute_import  # Avoid importing `importlib` from this package.
 
-from contextlib import contextmanager
 import copy
 import imp
 from importlib import import_module
@@ -36,18 +35,6 @@ def import_by_path(dotted_path, error_prefix=''):
     return attr
 
 
-@contextmanager
-def import_lock():
-    """
-    Context manager that aquires the import lock.
-    """
-    imp.acquire_lock()
-    try:
-        yield
-    finally:
-        imp.release_lock()
-
-
 def autodiscover_modules(*args, **kwargs):
     """
     Auto-discover INSTALLED_APPS modules and fail silently when