Update CHANGES.md

Author: hashhar

CHANGES.md

@@ -15,9 +15,6 @@ and the [PyPI page](https://pypi.org/project/trino/).
    ([#537](https://github.com/trinodb/trino-python-client/pull/537))
 * Fix `KeyError` when accessing missing `error_location` in `TrinoQueryError`.
    ([#535](https://github.com/trinodb/trino-python-client/pull/535)).
-* Fix type annotation for `mutual_authentication` parameter in Kerberos/GSSAPI
-  authentication.
-  ([#542](https://github.com/trinodb/trino-python-client/pull/542))
 * Add support for `SET AUTHORIZATION` and `RESET AUTHORIZATION` statements.
   ([#551](https://github.com/trinodb/trino-python-client/pull/551))
 * Use default TLS port when URI scheme is `https`.