diff --git a/django/conf/urls/__init__.py b/django/conf/urls/__init__.py
index c58e581cd9..1ec5da82ad 100644
--- a/django/conf/urls/__init__.py
+++ b/django/conf/urls/__init__.py
@@ -1,22 +1,9 @@
-import warnings
-
-from django.urls import include, re_path
-from django.utils.deprecation import RemovedInDjango40Warning
+from django.urls import include
 from django.views import defaults
 
-__all__ = ['handler400', 'handler403', 'handler404', 'handler500', 'include', 'url']
+__all__ = ['handler400', 'handler403', 'handler404', 'handler500', 'include']
 
 handler400 = defaults.bad_request
 handler403 = defaults.permission_denied
 handler404 = defaults.page_not_found
 handler500 = defaults.server_error
-
-
-def url(regex, view, kwargs=None, name=None):
-    warnings.warn(
-        'django.conf.urls.url() is deprecated in favor of '
-        'django.urls.re_path().',
-        RemovedInDjango40Warning,
-        stacklevel=2,
-    )
-    return re_path(regex, view, kwargs, name)
diff --git a/docs/ref/urls.txt b/docs/ref/urls.txt
index ce14817c22..6d0110af76 100644
--- a/docs/ref/urls.txt
+++ b/docs/ref/urls.txt
@@ -136,17 +136,6 @@ Helper function to return a URL pattern for serving files in debug mode::
         # ... the rest of your URLconf goes here ...
     ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
 
-``url()``
-=========
-
-.. function:: url(regex, view, kwargs=None, name=None)
-
-This function is an alias to :func:`django.urls.re_path()`.
-
-.. deprecated:: 3.1
-
-    Alias of :func:`django.urls.re_path` for backwards compatibility.
-
 ``handler400``
 ==============
 
diff --git a/docs/releases/4.0.txt b/docs/releases/4.0.txt
index e15023ed66..d8c130db4f 100644
--- a/docs/releases/4.0.txt
+++ b/docs/releases/4.0.txt
@@ -311,3 +311,5 @@ to remove usage of these features.
 
 * The ``NullBooleanField`` model field is removed, except for support in
   historical migrations.
+
+* ``django.conf.urls.url()`` is removed.
diff --git a/tests/urlpatterns/tests.py b/tests/urlpatterns/tests.py
index b6b23ade9e..1cd3523ca5 100644
--- a/tests/urlpatterns/tests.py
+++ b/tests/urlpatterns/tests.py
@@ -1,12 +1,10 @@
 import string
 import uuid
 
-from django.conf.urls import url as conf_url
 from django.core.exceptions import ImproperlyConfigured
 from django.test import SimpleTestCase
 from django.test.utils import override_settings
 from django.urls import NoReverseMatch, Resolver404, path, resolve, reverse
-from django.utils.deprecation import RemovedInDjango40Warning
 
 from .converters import DynamicConverter
 from .views import empty_view
@@ -315,13 +313,3 @@ class ConversionExceptionTests(SimpleTestCase):
             raise TypeError('This type error propagates.')
         with self.assertRaisesMessage(TypeError, 'This type error propagates.'):
             reverse('dynamic', kwargs={'value': object()})
-
-
-class DeprecationTests(SimpleTestCase):
-    def test_url_warning(self):
-        msg = (
-            'django.conf.urls.url() is deprecated in favor of '
-            'django.urls.re_path().'
-        )
-        with self.assertRaisesMessage(RemovedInDjango40Warning, msg):
-            conf_url(r'^regex/(?P<pk>[0-9]+)/$', empty_view, name='regex')