devel/py-msgpack: Revert 0450cd7a66f540d0601f58f597acb5ea5654efcd
This note is not needed since archivers/py-borgbackup* are checked during
devel/py-msgpack update already.
Reference: https://cgit.freebsd.org/ports/commit/?id=464b0ec1df6c92d8804246d710a7e9ff76dfbb35
https://cgit.freebsd.org/ports/commit/?id=b40c8cdf2f37cda283f395467a153d530f3945cd https://cgit.freebsd.org/ports/commit/?id=39aceba8c10c6da8e36ff21edd6e8d2c26edecd1 https://cgit.freebsd.org/ports/commit/?id=70fc1370fd3c1ffe28800ad64819d3636141d93f https://cgit.freebsd.org/ports/commit/?id=36bc423e164e8ed5534b1b5e0c6cfd2ee7859c78 https://cgit.freebsd.org/ports/commit/?id=e295ee325d650f524bcdecdf5ed02f24fb149c58