Python: remove the useless `semantic-release-pypi`

Problem

The semantic-release-pypi only works with setup.py / setup.cfg.

Proposal

Remove the plugin and provide an example using @semantic-release/exec.

added To do enhancement labels

assigned to @daniel.dehennin

added In progress label and removed To do label

created branch 23-python-remove-the-useless-semantic-release-pypi to address this issue

mentioned in merge request !68 (merged)

mentioned in commit 43ae5bf6

closed with merge request !68 (merged)

removed In progress label

This issue has been resolved in version 2.0.0

The release is available on GitLab release.

Your semantic-release bot