updated whatsnew entry

doc/source/whatsnew/v1.0.0.rst

@@ -356,31 +356,6 @@ When :class:`Categorical` contains ``np.nan``,
 
    pd.Categorical([1, 2, np.nan], ordered=True).min()
 
-Avoid iterating over ``Series.str``
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-Iterating over the `.str` accessor of :class:`Series` will now raise a
- `FutureWarning` and be removed in future releases (:issue:`28277`).
-Since no clear purpose of this feature could be derived, there will be
- no replacement.
-
-.. code-block:: ipython
-
-   In [1]: s = pd.Series(["a", "ab"])
-   In [2]: s
-   Out[2]:
-       0     a
-       1    ab
-   dtype: object
-
-   In [3]: generator = (_ for _ in s.str)
-   In [4]: next(generator)
-   Out[4]:
-   FutureWarning: Columnar iteration over characters will be deprecated in future releases.
-       0    a
-       1    a
-   dtype: object
-
 .. _whatsnew_1000.api_breaking.deps:
 
 Increased minimum versions for dependencies
@@ -465,6 +440,7 @@ Other API changes
 - :meth:`Series.dropna` has dropped its ``**kwargs`` argument in favor of a single ``how`` parameter.
   Supplying anything else than ``how`` to ``**kwargs`` raised a ``TypeError`` previously (:issue:`29388`)
 - When testing pandas, the new minimum required version of pytest is 5.0.1 (:issue:`29664`)
+- :meth:`Series.str.__iter__` was deprecated and will be removed in future releases (:issue:`28277`).
 
 
 .. _whatsnew_1000.api.documentation: