Is release.py still used?

Replacing direct use of bandit with flake8-bandit causes `housekeep.py` to be scanned for security issues:
```
flake8 aiosmtpd housekeep.py release.py setup.py --select S
pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
Unable to find qualified name for module: housekeep.py
Unable to find qualified name for module: release.py
Unable to find qualified name for module: setup.py
release.py:101:1: S603 subprocess call - check for execution of untrusted input.
release.py:103:1: S603 subprocess call - check for execution of untrusted input.
release.py:109:1: S603 subprocess call - check for execution of untrusted input.
release.py:126:1: S603 subprocess call - check for execution of untrusted input.
release.py:141:1: S603 subprocess call - check for execution of untrusted input.
release.py:156:1: S607 Starting a process with a partial executable path
release.py:156:1: S603 subprocess call - check for execution of untrusted input.
release.py:158:1: S607 Starting a process with a partial executable path
release.py:158:1: S603 subprocess call - check for execution of untrusted input.
```
If it is not used the simplest solution would be to delete it. Otherwise the detected issues need to be reviewed and addressed.