Revert mean field change (#357)

* Revert "Mean Field class update (#356)"

This reverts commit 24f6afc.

* redirect to Anton repo for article version

* Update doc

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Co-authored-by: Quentin Barthélemy <[email protected]>

Author: gcattan

doc/whatsnew.rst

@@ -20,8 +20,6 @@ v0.9.dev
 
 - Enhance :func:`pyriemann.utils.distance.pairwise_distance` to support HPD matrices for "euclid", "harmonic", "logchol" and "logeuclid" metrics. :pr:`350` by :user:`qbarthelemy`
 
-- Improve threading in :class:`pyriemann.classification.MeanField`, add new label method "lda" and change default values of parameters `label_method` and `power_list`. :pr:`356` by :user:`toncho11`
-
 v0.8 (February 2025)
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