DOC Remove outdated doc in KBinsDiscretizer
See
@@ -191,8 +191,6 @@ class KBinsDiscretizer(BaseEstimator, TransformerMixin):
def _validate_n_bins(self, n_features):
"""Returns n_bins_, the number of bins per feature.
-
- Also ensures that ignored bins are zero.
"""
orig_bins = self.n_bins
if isinstance(orig_bins, numbers.Number):
