revert more unnecessary changes

Author: tswast

scripts/publish_api_coverage.py

@@ -204,9 +204,6 @@ def generate_pandas_api_coverage():
 def generate_sklearn_api_coverage():
     """Explore all SKLearn modules, and for each item contained generate a
     regex to detect it being imported, and record whether we implement it"""
-
-    import sklearn  # noqa
-
     sklearn_modules = [
         "sklearn",
         "sklearn.model_selection",

tests/unit/test_dataframe_polars.py

@@ -2319,8 +2319,7 @@ def test_binop_with_self_aggregate(session, scalars_dfs):
     df_columns = ["int64_col", "float64_col", "int64_too"]
 
     bf_df = scalars_df[df_columns]
-    bf_deviation = bf_df - bf_df.mean()
-    bf_result = bf_deviation.to_pandas()
+    bf_result = (bf_df - bf_df.mean()).to_pandas()
 
     pd_df = scalars_pandas_df[df_columns]
     pd_result = pd_df - pd_df.mean()