Unmark passing test in test_bytes.py

Lib/test/test_bytes.py

@@ -1637,8 +1637,6 @@ class ByteArrayTest(BaseBytesTest, unittest.TestCase):
         from _testcapi import getbuffer_with_null_view
         self.assertRaises(BufferError, getbuffer_with_null_view, bytearray())
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_iterator_pickling2(self):
         orig = bytearray(b'abc')
         data = list(b'qwerty')