MNT remove deprecated ensemble.partial_dependence (scikit-learn#15789)

Author: NicolasHug

doc/modules/classes.rst

@@ -1625,10 +1625,3 @@ To be removed in 0.23
    metrics.jaccard_similarity_score
    linear_model.logistic_regression_path
    utils.safe_indexing
-
-.. autosummary::
-   :toctree: generated/
-   :template: function.rst
-
-   ensemble.partial_dependence.partial_dependence
-   ensemble.partial_dependence.plot_partial_dependence

sklearn/ensemble/__init__.py

@@ -21,7 +21,6 @@
 from ._stacking import StackingClassifier
 from ._stacking import StackingRegressor
 
-from . import partial_dependence
 
 __all__ = ["BaseEnsemble",
            "RandomForestClassifier", "RandomForestRegressor",
@@ -31,4 +30,4 @@
            "GradientBoostingRegressor", "AdaBoostClassifier",
            "AdaBoostRegressor", "VotingClassifier", "VotingRegressor",
            "StackingClassifier", "StackingRegressor",
-           "partial_dependence"]
+           ]