Refs #24728 - Removed Atom1Feed/RssFeed mime_type attribute.

Per deprecation timeline.

django/utils/feedgenerator.py

@@ -278,15 +278,6 @@ class RssFeed(SyndicationFeed):
     def endChannelElement(self, handler):
         handler.endElement("channel")
 
-    @property
-    def mime_type(self):
-        warnings.warn(
-            'The mime_type attribute of RssFeed is deprecated. '
-            'Use content_type instead.',
-            RemovedInDjango20Warning, stacklevel=2
-        )
-        return self.content_type
-
 
 class RssUserland091Feed(RssFeed):
     _version = "0.91"
@@ -445,15 +436,6 @@ class Atom1Feed(SyndicationFeed):
         if item['item_copyright'] is not None:
             handler.addQuickElement("rights", item['item_copyright'])
 
-    @property
-    def mime_type(self):
-        warnings.warn(
-            'The mime_type attribute of Atom1Feed is deprecated. '
-            'Use content_type instead.',
-            RemovedInDjango20Warning, stacklevel=2
-        )
-        return self.content_type
-
 
 # This isolates the decision of what the system default is, so calling code can
 # do "feedgenerator.DefaultFeed" instead of "feedgenerator.Rss201rev2Feed".

docs/releases/2.0.txt

@@ -288,3 +288,6 @@ these features.
 
 * Support for custom error views that don't accept an ``exception`` parameter
   is removed.
+
+* The ``mime_type`` attribute of ``django.utils.feedgenerator.Atom1Feed`` and
+  ``django.utils.feedgenerator.RssFeed`` is removed.