Removed extraneous whitespace.

python/minimal_test.py

diff --git a/python/minimal_test.py b/python/minimal_test.py
index b88d732..14362b6 100644
--- a/python/minimal_test.py
+++ b/python/minimal_test.py
@@ -166,6 +166,6 @@
       count += 1
     self.assertEqual(count, 3)
     self.assertEqual(len(expected), 0)
-  
+
 if __name__ == '__main__':
     unittest.main(verbosity=2)