Remove outdated versionadded/versionchanged notes in docs

docs/reference/contrib/settings.rst

@@ -272,8 +272,6 @@ and two more to fetch each page):
 Utilising the ``page_url`` setting shortcut
 -------------------------------------------
 
-.. versionadded:: 2.10
-
 If, like in the previous section, your settings model references pages,
 and you regularly need to output the URLs of those pages in your project,
 you can likely use the setting model's ``page_url`` shortcut to do that more

docs/reference/settings.rst

@@ -660,10 +660,6 @@ Customise the behaviour of rich text fields. By default, ``RichTextField`` and `
 
 If a ``'default'`` editor is not specified, rich text fields that do not specify an ``editor`` argument will use the Draftail editor with the default feature set enabled.
 
-.. versionchanged:: 2.10
-
-    Omitting the ``'default'`` editor now leaves the original default editor intact, so it is no longer necessary to redefine ``'default'`` when adding alternative editors.
-
 
 .. _WAGTAILADMIN_GLOBAL_PAGE_EDIT_LOCK:
 

docs/reference/signals.rst

@@ -84,8 +84,6 @@ This signal is emitted from a ``Page`` when the page is unpublished.
 ``pre_page_move`` and ``post_page_move``
 ------------------------------------------
 
-.. versionadded:: 2.10
-
 These signals are emitted from a ``Page`` immediately before and after it is moved.
 
 Subscribe to ``pre_page_move`` if you need to know values BEFORE any database changes are applied. For example: Getting the page's previous URL, or that of its descendants.