Deleted removed argument 'sheetname' from StyleFrame.read_excel documentation

Author: DeepSpace2

styleframe/style_frame.py

@@ -158,11 +158,6 @@ def read_excel(cls, path: str, sheet_name: Union[str, int] = 0, read_style: bool
         .. note:: :meth:`read_excel` also accepts all arguments that :func:`pandas.read_excel` accepts as kwargs.
 
         :param str path: The path to the Excel file to read.
-        :param sheetname:
-              .. deprecated:: 1.6
-                 Use ``sheet_name`` instead.
-              .. versionchanged:: 4.0
-                 Removed
         :param sheet_name: The sheet name to read. If an integer is provided then it be used as a zero-based
                 sheet index. Default is 0.
         :type sheet_name: str or int