3 files changed, 0 insertions, 12 deletions
diff --git a/docs/topics/http/middleware.txt b/docs/topics/http/middleware.txt
index 1626d16992..ac440a9fca 100644
--- a/docs/topics/http/middleware.txt
+++ b/docs/topics/http/middleware.txt
@@ -291,8 +291,6 @@ object with a :attr:`~django.http.HttpResponse.status_code` of 404.
 Asynchronous support
 ====================
 
-.. versionadded:: 3.1
-
 Middleware can support any combination of synchronous and asynchronous
 requests. Django will adapt requests to fit the middleware's requirements if it
 cannot support both, but at a performance penalty.
@@ -423,7 +421,3 @@ These are the behavioral differences between using :setting:`MIDDLEWARE` and
    HTTP response, and then the next middleware in line will see that
    response. Middleware are never skipped due to a middleware raising an
    exception.
-
-.. versionchanged:: 3.1
-
-    Support for asynchronous requests was added to the ``MiddlewareMixin``.
diff --git a/docs/topics/http/urls.txt b/docs/topics/http/urls.txt
index 31671db81d..6ab915cfd0 100644
--- a/docs/topics/http/urls.txt
+++ b/docs/topics/http/urls.txt
@@ -157,10 +157,6 @@ A converter is a class that includes the following:
   and as a consequence :func:`~django.urls.reverse` will raise
   :class:`~django.urls.NoReverseMatch` unless another URL pattern matches.
 
-  .. versionchanged:: 3.1
-
-    Support for raising ``ValueError`` to indicate no match was added.
-
 For example::
 
     class FourDigitYearConverter:
diff --git a/docs/topics/http/views.txt b/docs/topics/http/views.txt
index 554e93386c..656d1ce155 100644
--- a/docs/topics/http/views.txt
+++ b/docs/topics/http/views.txt
@@ -208,8 +208,6 @@ in a test view. For example::
 Async views
 ===========
 
-.. versionadded:: 3.1
-
 As well as being synchronous functions, views can also be asynchronous
 ("async") functions, normally defined using Python's ``async def`` syntax.
 Django will automatically detect these and run them in an async context.