TST: avoid nose running sklearn.test as a test

Author: GaelVaroquaux

sklearn/__init__.py

@@ -47,9 +47,13 @@ def test(*args, **kwargs):
 for more information.
 
 This function, `sklearn.test()` does not do anything. It does not run
-the tests and will be deprecated in release 0.16.
+the tests and will be removed in release 0.16.
 """, stacklevel=2)
 
+    # The following line is useful so that nosetests doesn't consider
+    # "test" as a test function
+    test.__test__ = False
+
     __all__ = ['cross_validation', 'cluster', 'covariance',
                'datasets', 'decomposition', 'feature_extraction',
                'feature_selection', 'semi_supervised',