Removed references to changes made in 1.2.

Thanks Florian Apolloner for the patch.

docs/ref/contrib/admin/index.txt

@@ -115,8 +115,6 @@ subclass::
 
 .. attribute:: ModelAdmin.actions_selection_counter
 
-    .. versionadded:: 1.2
-
     Controls whether a selection counter is display next to the action dropdown.
     By default, the admin changelist will display it
     (``actions_selection_counter = True``).
@@ -177,12 +175,9 @@ subclass::
             fields = ('url', 'title', 'content')
 
     In the above example, only the fields ``url``, ``title`` and ``content``
-    will be displayed, sequentially, in the form.
-
-    .. versionadded:: 1.2
-
-    ``fields`` can contain values defined in :attr:`ModelAdmin.readonly_fields`
-    to be displayed as read-only.
+    will be displayed, sequentially, in the form. ``fields`` can contain
+    values defined in :attr:`ModelAdmin.readonly_fields` to be displayed as
+    read-only.
 
     .. versionadded:: 1.4
 
@@ -262,8 +257,6 @@ subclass::
             'fields': (('first_name', 'last_name'), 'address', 'city', 'state'),
             }
 
-        .. versionadded:: 1.2
-
         ``fields`` can contain values defined in
         :attr:`~ModelAdmin.readonly_fields` to be displayed as read-only.
 
@@ -380,8 +373,6 @@ subclass::
 
 .. attribute:: ModelAdmin.get_changelist
 
-    .. versionchanged:: 1.2
-
     Returns the Changelist class to be used for listing. By default,
     ``django.contrib.admin.views.main.ChangeList`` is used. By inheriting this
     class you can change the behavior of the listing.
@@ -819,8 +810,6 @@ subclass::
 
 .. attribute:: ModelAdmin.readonly_fields
 
-    .. versionadded:: 1.2
-
     By default the admin shows all fields as editable. Any fields in this
     option (which should be a ``list`` or ``tuple``) will display its data
     as-is and non-editable. This option behaves nearly identical to
@@ -928,8 +917,6 @@ templates used by the :class:`ModelAdmin` views:
 
 .. attribute:: ModelAdmin.add_form_template
 
-    .. versionadded:: 1.2
-
     Path to a custom template, used by :meth:`add_view`.
 
 .. attribute:: ModelAdmin.change_form_template
@@ -947,8 +934,6 @@ templates used by the :class:`ModelAdmin` views:
 
 .. attribute:: ModelAdmin.delete_selected_confirmation_template
 
-    .. versionadded:: 1.2
-
     Path to a custom template, used by the :meth:`delete_selected`
     action method for displaying a confirmation page when deleting one
     or more objects. See the :doc:`actions
@@ -1035,8 +1020,6 @@ templates used by the :class:`ModelAdmin` views:
 
 .. method:: ModelAdmin.get_readonly_fields(self, request, obj=None)
 
-    .. versionadded:: 1.2
-
     The ``get_readonly_fields`` method is given the ``HttpRequest`` and the
     ``obj`` being edited (or ``None`` on an add form) and is expected to return
     a ``list`` or ``tuple`` of field names that will be displayed as read-only,
@@ -1405,20 +1388,17 @@ adds some of its own (the shared features are actually defined in the
 - :attr:`~InlineModelAdmin.form`
 - :attr:`~ModelAdmin.fieldsets`
 - :attr:`~ModelAdmin.fields`
+- :attr:`~ModelAdmin.formfield_overrides`
 - :attr:`~ModelAdmin.exclude`
 - :attr:`~ModelAdmin.filter_horizontal`
 - :attr:`~ModelAdmin.filter_vertical`
 - :attr:`~ModelAdmin.prepopulated_fields`
 - :attr:`~ModelAdmin.radio_fields`
+- :attr:`~ModelAdmin.readonly_fields`
 - :attr:`~InlineModelAdmin.raw_id_fields`
 - :meth:`~ModelAdmin.formfield_for_foreignkey`
 - :meth:`~ModelAdmin.formfield_for_manytomany`
 
-.. versionadded:: 1.2
-
-- :attr:`~ModelAdmin.readonly_fields`
-- :attr:`~ModelAdmin.formfield_overrides`
-
 .. versionadded:: 1.3
 
 - :attr:`~ModelAdmin.ordering`
@@ -1463,8 +1443,6 @@ The ``InlineModelAdmin`` class adds:
     :doc:`formsets documentation </topics/forms/formsets>` for more
     information.
 
-    .. versionadded:: 1.2
-
     For users with JavaScript-enabled browsers, an "Add another" link is
     provided to enable any number of additional inlines to be added in addition
     to those provided as a result of the ``extra`` argument.
@@ -1541,8 +1519,6 @@ automatically::
 Working with many-to-many models
 --------------------------------
 
-.. versionadded:: 1.2
-
 By default, admin widgets for many-to-many relations will be displayed
 on whichever model contains the actual reference to the
 :class:`~django.db.models.ManyToManyField`. Depending on your ``ModelAdmin``
@@ -1842,21 +1818,15 @@ Templates can override or extend base admin templates as described in
 
 .. attribute:: AdminSite.logout_template
 
-    .. versionadded:: 1.2
-
     Path to a custom template that will be used by the admin site logout view.
 
 .. attribute:: AdminSite.password_change_template
 
-    .. versionadded:: 1.2
-
     Path to a custom template that will be used by the admin site password
     change view.
 
 .. attribute:: AdminSite.password_change_done_template
 
-    .. versionadded:: 1.2
-
     Path to a custom template that will be used by the admin site password
     change done view.