remove __note__ documentation

Author: iritkatriel

Doc/library/traceback.rst

@@ -236,14 +236,6 @@ capture data for later printing in a lightweight fashion.
 
       The ``__suppress_context__`` value from the original exception.
 
-   .. attribute:: __note__
-
-      The ``__note__`` value from the original exception, which is
-      string or ``None``. If it is not ``None`` is it formatted in
-      the traceback after the exception string.
-
-      .. versionadded:: 3.11
-
    .. attribute:: stack
 
       A :class:`StackSummary` representing the traceback.

Doc/tutorial/errors.rst

@@ -585,65 +585,3 @@ the following pattern::
    ...    raise ExceptionGroup("Test Failures", excs)
    ...
 
-
-Enriching Exceptions with Notes
-===============================
-
-When an exception is created in order to be raised, it is usually initialized
-with information that describes the error that has occurred. There are cases
-where it is useful to add information after the exception was caught. For this
-purpose, exceptions have a mutable field ``__note__`` that can be string or
-``None`` (``None`` by default). If it is a string, it is included in the
-formatted tracebacks after the exception. ::
-
-   >>> try:
-   ...     raise TypeError('bad type')
-   ... except Exception as e:
-   ...     e.__note__ = 'Add some information'
-   ...     raise
-   ...
-   Traceback (most recent call last):
-     File "<stdin>", line 2, in <module>
-   TypeError: bad type
-   Add some information
-   >>>
-
-For example, when collecting exceptions into an exception group, we may want
-to add context information for the individual errors. In the following each
-exception in the group has a note indicating when this error has occurred. ::
-
-   >>> def f():
-   ...     raise OSError('operation failed')
-   ...
-   >>> excs = []
-   >>> for i in range(3):
-   ...     try:
-   ...         f()
-   ...     except Exception as e:
-   ...         e.__note__ = f'Happened in Iteration {i+1}'
-   ...         excs.append(e)
-   ...
-   >>> raise ExceptionGroup('We have some problems', excs)
-     + Exception Group Traceback (most recent call last):
-     |   File "<stdin>", line 1, in <module>
-     | ExceptionGroup: We have some problems
-     +-+---------------- 1 ----------------
-       | Traceback (most recent call last):
-       |   File "<stdin>", line 3, in <module>
-       |   File "<stdin>", line 2, in f
-       | OSError: operation failed
-       | Happened in Iteration 1
-       +---------------- 2 ----------------
-       | Traceback (most recent call last):
-       |   File "<stdin>", line 3, in <module>
-       |   File "<stdin>", line 2, in f
-       | OSError: operation failed
-       | Happened in Iteration 2
-       +---------------- 3 ----------------
-       | Traceback (most recent call last):
-       |   File "<stdin>", line 3, in <module>
-       |   File "<stdin>", line 2, in f
-       | OSError: operation failed
-       | Happened in Iteration 3
-       +------------------------------------
-   >>>