Shorten docs

Author: johnslavik

Doc/library/exceptions.rst

@@ -215,17 +215,11 @@ The following exceptions are the exceptions that are usually raised.
 
       The object that was accessed for the named attribute.
 
-   When possible, :attr:`name` and :attr:`obj` are set automatically
-   for failed attribute lookups.
+   When possible, :attr:`name` and :attr:`obj` are set automatically.
 
    .. versionchanged:: 3.10
       Added the :attr:`name` and :attr:`obj` attributes.
 
-   .. versionchanged:: next
-      The default error message is now generated from :attr:`name` and
-      :attr:`obj` when both attributes are set and the exception was
-      constructed with no positional arguments, or with a single positional
-      argument equal to :attr:`name`.
 
 .. exception:: EOFError