Update regression-example-ames-no-preproc-val-set.py

Update the parameter value for purge_model_storage_files based on updated API.

best_model_found = cerebros.get_best_model(purge_model_storage_files='slate')

Author: david-thrower

regression-example-ames-no-preproc-val-set.py

@@ -219,7 +219,7 @@ def hash_based_split(df,  # Pandas dataframe
 result = cerebros.run_random_search()
 
 print("Best model: (May need to re-initialize weights, and retrain with early stopping callback)")
-best_model_found = cerebros.get_best_model(purge_model_storage_files=True)
+best_model_found = cerebros.get_best_model(purge_model_storage_files='slate')
 print(best_model_found.summary())