[DEP] Move HampelFilter to legacy (#1830)

* Move HampelFilter

* remove example

aeon/forecasting/compose/tests/test_pipeline.py

@@ -19,10 +19,10 @@
 from aeon.testing.mock_estimators import MockForecaster, MockTransformer
 from aeon.testing.utils.estimator_checks import _assert_array_almost_equal
 from aeon.transformations._legacy.adapt import TabularToSeriesAdaptor
+from aeon.transformations._legacy.outlier_detection import HampelFilter
 from aeon.transformations.detrend import Detrender
 from aeon.transformations.hierarchical.aggregate import Aggregator
 from aeon.transformations.impute import Imputer
-from aeon.transformations.outlier_detection import HampelFilter
 from aeon.utils.index_functions import get_window
 from aeon.utils.validation._dependencies import _check_soft_dependencies
 

aeon/transformations/outlier_detection.py → aeon/transformations/_legacy/outlier_detection.py

@@ -7,18 +7,11 @@
 
 import numpy as np
 import pandas as pd
-from deprecated.sphinx import deprecated
 
 from aeon.forecasting.model_selection import SlidingWindowSplitter
 from aeon.transformations.base import BaseTransformer
 
 
-# TODO: remove in v0.11.0
-@deprecated(
-    version="0.10.0",
-    reason="HampelFilter will be removed in version 0.11.0.",
-    category=FutureWarning,
-)
 class HampelFilter(BaseTransformer):
     """Use HampelFilter to detect outliers based on a sliding window.
 
@@ -46,14 +39,6 @@ class HampelFilter(BaseTransformer):
     ----------
     .. [1] Hampel F. R., "The influence curve and its role in robust estimation",
        Journal of the American Statistical Association, 69, 382–393, 1974
-
-    Examples
-    --------
-    >>> from aeon.transformations.outlier_detection import HampelFilter
-    >>> from aeon.datasets import load_airline
-    >>> y = load_airline()
-    >>> transformer = HampelFilter(window_length=10)
-    >>> y_hat = transformer.fit_transform(y)
     """
 
     _tags = {

docs/api_reference/transformations.rst

@@ -375,14 +375,6 @@ Bootstrap transformations
 Outlier detection, changepoint detection
 ----------------------------------------
 
-.. currentmodule:: aeon.transformations.outlier_detection
-
-.. autosummary::
-    :toctree: auto_generated/
-    :template: class.rst
-
-    HampelFilter
-
 .. currentmodule:: aeon.transformations.series._clasp
 
 .. autosummary::