Update test_binary.py

Author: janmotl

category_encoders/tests/test_binary.py

@@ -1,8 +1,6 @@
 import pandas as pd
 from unittest2 import TestCase  # or `from unittest import ...` if on Python 3.4+
 import numpy as np
-import random
-from sklearn.compose import ColumnTransformer
 
 import category_encoders as encoders
 
@@ -30,4 +28,3 @@ def test_binary_dist(self):
 
         # make sure they are the same
         self.assertTrue(split.equals(c))
-