Refs #31180 -- Removed default_app_config application configuration variable per deprecation timeline.

1 files changed, 4 insertions, 40 deletions

diff --git a/django/apps/config.py b/django/apps/config.py
index 7dfb4b4e15..671db98200 100644
--- a/django/apps/config.py
+++ b/django/apps/config.py
@@ -1,10 +1,8 @@
 import inspect
 import os
-import warnings
 from importlib import import_module
 
 from django.core.exceptions import ImproperlyConfigured
-from django.utils.deprecation import RemovedInDjango41Warning
 from django.utils.functional import cached_property
 from django.utils.module_loading import import_string, module_has_submodule
 
@@ -102,7 +100,6 @@ class AppConfig:
         """
         # create() eventually returns app_config_class(app_name, app_module).
         app_config_class = None
-        app_config_name = None
         app_name = None
         app_module = None
 
@@ -134,7 +131,6 @@ class AppConfig:
                 ]
                 if len(app_configs) == 1:
                     app_config_class = app_configs[0][1]
-                    app_config_name = '%s.%s' % (mod_path, app_configs[0][0])
                 else:
                     # Check if there's exactly one AppConfig subclass,
                     # among those that explicitly define default = True.
@@ -151,43 +147,11 @@ class AppConfig:
                         )
                     elif len(app_configs) == 1:
                         app_config_class = app_configs[0][1]
-                        app_config_name = '%s.%s' % (mod_path, app_configs[0][0])
 
-            # If app_module specifies a default_app_config, follow the link.
-            # default_app_config is deprecated, but still takes over the
-            # automatic detection for backwards compatibility during the
-            # deprecation period.
-            try:
-                new_entry = app_module.default_app_config
-            except AttributeError:
-                # Use the default app config class if we didn't find anything.
-                if app_config_class is None:
-                    app_config_class = cls
-                    app_name = entry
-            else:
-                message = (
-                    '%r defines default_app_config = %r. ' % (entry, new_entry)
-                )
-                if new_entry == app_config_name:
-                    message += (
-                        'Django now detects this configuration automatically. '
-                        'You can remove default_app_config.'
-                    )
-                else:
-                    message += (
-                        "However, Django's automatic detection %s. You should "
-                        "move the default config class to the apps submodule "
-                        "of your application and, if this module defines "
-                        "several config classes, mark the default one with "
-                        "default = True." % (
-                            "picked another configuration, %r" % app_config_name
-                            if app_config_name
-                            else "did not find this configuration"
-                        )
-                    )
-                warnings.warn(message, RemovedInDjango41Warning, stacklevel=2)
-                entry = new_entry
-                app_config_class = None
+            # Use the default app config class if we didn't find anything.
+            if app_config_class is None:
+                app_config_class = cls
+                app_name = entry
 
         # If import_string succeeds, entry is an app config class.
         if app_config_class is None: