Remove prints from the tests.

rocksdb/tests/test_db.py

@@ -74,13 +74,6 @@ class TestDB(unittest.TestCase, TestHelper):
         self.assertEqual(ref, ret)
 
     def test_write_batch_iter(self):
-        batch = rocksdb.WriteBatch()
-        batch.put(b"key1", b"v1")
-        batch.delete(b'a')
-        batch.merge(b'xxx', b'value')
-        for op, key, value in batch:
-            print op, key, value
-
         batch = rocksdb.WriteBatch()
         self.assertEqual([], list(batch))