remove insanely old note from 12 years ago

Change-Id: Id0929b6bc062fc4766c9c69427524e3cd2da1030
(cherry picked from commit 853f726454cff2f34c010cbafacfec85f51f8eeb)

diff --git a/doc/build/orm/collections.rst b/doc/build/orm/collections.rst
index 1c40e795589a5f7d18edf010ca160786167cb45a..800d2613bdc1a6595b97e0fdc5fc323e5a268970 100644 (file)
--- a/doc/build/orm/collections.rst
+++ b/doc/build/orm/collections.rst
@@ -622,21 +622,6 @@ must decorate appender and remover methods, however- there are no compatible
 methods in the basic dictionary interface for SQLAlchemy to use by default.
 Iteration will go through ``itervalues()`` unless otherwise decorated.
 
-.. note::
-
-   Due to a bug in MappedCollection prior to version 0.7.6, this
-   workaround usually needs to be called before a custom subclass
-   of :class:`.MappedCollection` which uses :meth:`.collection.internally_instrumented`
-   can be used::
-
-    from sqlalchemy.orm.collections import MappedCollection, _instrument_class
-
-    _instrument_class(MappedCollection)
-
-   This will ensure that the :class:`.MappedCollection` has been properly
-   initialized with custom ``__setitem__()`` and ``__delitem__()``
-   methods before used in a custom subclass.
-
 .. autoclass:: sqlalchemy.orm.collections.MappedCollection
    :members: