gh-132388: remove outdated TODO comment in `test_hmac.py` (#133008)

diff --git a/Lib/test/test_hmac.py b/Lib/test/test_hmac.py
index 8370ba30601fae1d3bf0601c028f7931b9db93dc..e9a465180e9ce19fd926970b3675153b6e3ffb2f 100644 (file)
--- a/Lib/test/test_hmac.py
+++ b/Lib/test/test_hmac.py
@@ -980,8 +980,6 @@ class OpenSSLConstructorTestCase(ThroughOpenSSLAPIMixin,
         return _hashlib.UnsupportedDigestmodError
 
     def test_hmac_digest_digestmod_parameter(self):
-        # TODO(picnixz): remove default arguments in _hashlib.hmac_digest()
-        # since the return value is not a HMAC object but a bytes object.
         for value in [object, 'unknown', 1234, None]:
             with (
                 self.subTest(value=value),