MAINTAINER.rst: Update Pypi releases

Update section on creating Pypi releases.

Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>

MAINTAINERS.rst

@@ -85,17 +85,9 @@ Pre-release test plan
 Building and uploading the release wheels
 -----------------------------------------
 
-You need the zephyr-project PyPI credentials for the 'twine upload' command. ::
-
- git clean -ffdx
- pip3 install --upgrade build twine
- pyproject-build
- twine upload -u zephyr-project dist/*
-
-The 'git clean' step is important. We've anecdotally observed broken wheels
-being generated from dirty repositories.
-
-Check out [packaging.python.org](https://packaging.python.org/en/latest/tutorials/packaging-projects/#generating-distribution-archives) for more detailed instructions.
+Creating Pypi releases is done automatically from Github. After publishing
+a release on Github a release build is packaged and uploaded with the
+version specified in pyproject.toml.
 
 Tagging the release
 -------------------