update test

Author: rosbo

tests/test_sklearnex.py

@@ -2,12 +2,9 @@
 
 import numpy as np
 
-from sklearn.cluster import DBSCAN
-
 class TestSklearnex(unittest.TestCase):
     def test_dbscan(self):
-        from sklearnex import patch_sklearn
-        patch_sklearn()
+        from sklearnex.cluster import DBSCAN
         X = np.array([[1., 2.], [2., 2.], [2., 3.],
             [8., 7.], [8., 8.], [25., 80.]], dtype=np.float32)