Apply suggestions from code review

Co-authored-by: Kevin Anderson <kevin.anderso@gmail.com>

Author: AdamRJensen

pvlib/iotools/meteonorm.py

@@ -402,8 +402,8 @@ def get_meteonorm_tmy(
         surface_tilt=0, surface_azimuth=180,
         time_step="1h", horizon="auto", terrain_situation="open",
         albedo=None, turbidity="auto", random_seed=None,
-        clear_sky_radiation_model="esra", future_scenario=None,
-        future_year=None, interval_index=False,
+        clear_sky_radiation_model="esra", data_version=None,
+        future_scenario=None, future_year=None, interval_index=False,
         map_variables=True, url=URL):
     """
     Retrieve TMY irradiance and weather data from Meteonorm.
@@ -448,6 +448,8 @@ def get_meteonorm_tmy(
         with the same random seed will yield identical results.
     clear_sky_radiation_model : str, default : 'esra'
         Which clearsky model to use. Must be either `'esra'` or `'solis'`.
+    data_version : str, optional
+        Deprecated parameter.  Has no effect.
     future_scenario : str, optional
         Future climate scenario.
     future_year : int, optional
@@ -491,7 +493,13 @@ def get_meteonorm_tmy(
        <https://docs.meteonorm.com/docs/getting-started>`_
     .. [3] `Meteonorm API reference
        <https://docs.meteonorm.com/api>`_
-    """
+    if data_version is not None:
+        msg = (
+            "This parameter was removed from the Meteonorm API "
+            "and now has no effect."
+        )
+        warn_deprecated(since="0.15.2", removal="0.16.0", name="data_version",
+                        addendum=msg)
     additional_params = {
         "situation": terrain_situation,
         "turbidity": turbidity,