CLN: drop **kwds from pd.read_excel
Drop ``**kwds`` from ``pd.read_excel``.

Wrt. "new" keyword parameter ``na_filter``: This parameter already exists in the doc string and is just masked in the ``kwds`` in the signature. If you follow the code paths all the way down to parsers.py, you can see that it indeed has a default of `True``.
Lgtm if green thanks @topper-123 