Remove old function from doc

Author: birgits

doc/modules.rst

@@ -68,7 +68,6 @@ power curve or power coefficient curve needed by the :py:class:`~.wind_turbine.W
    :toctree: temp/
 
    wind_turbine.get_turbine_data_from_file
-   wind_turbine.get_oedb_turbine_data
    wind_turbine.load_turbine_data_from_oedb
    wind_turbine.get_turbine_types