remove added functionality from whats new from newly released version

Author: Mikejmnez

doc/whats-new.rst

@@ -78,9 +78,6 @@ Claude, Deepak Cherian, Dimitri Papadopoulos Orfanos, Dylan H. Morris, Emmanuel
 New Features
 ~~~~~~~~~~~~
 
-- Improved ``pydap`` backend behavior and performance when using :py:func:`open_dataset`, :py:func:`open_datatree` when downloading dap4 (opendap) data (:issue:`10628`, :pull:`10629`).
-  ``batch=True|False`` is a new  ``backend_kwarg`` that further enables downloading multiple arrays in single response. In addition ``checksums`` is added as optional argument to be passed to ``pydap`` backend.
-  By `Miguel Jimenez-Urias <https://github.com/Mikejmnez>`_.
 - :py:func:`DataTree.from_dict` now supports passing in ``DataArray`` and nested
   dictionary values, and has a ``coords`` argument for specifying coordinates as
   ``DataArray`` objects (:pull:`10658`).

xarray/backends/pydap_.py

@@ -55,8 +55,7 @@ def __getitem__(self, key):
 
     def _getitem(self, key):
         if self._batch and hasattr(self.array, "dataset"):
-            # this are both True only for pydap>3.5.5
-            # from pydap.lib import resolve_batch_for_all_variables
+            # True only for pydap>3.5.5
             from pydap.client import data_check, get_batch_data
 
             dataset = self.array.dataset