Disable unnecessary warning in EnsembleVoteClassifier

[rasbt]

There is an unnecessary warning

 /Users/sebastian/miniforge3/lib/python3.9/site-packages/mlxtend/classifier/ensemble_vote.py:166: UserWarning: fit_base_estimators=False enforces use_clones to be `False`
  warnings.warn("fit_base_estimators=False "

when both use_clones and fit_base_estimators are False:

eclf = EnsembleVoteClassifier(clfs=(clf1, clf2, clf3),
                              weights=(1, 1, 1),
                              use_clones=False,
                              fit_base_estimators=False)
eclf.fit(X_train, y_train)

This warning should only be shown if

• fit_base_estimators=False and use_clones=True

not

• fit_base_estimators=False and use_clones=False