Change Artifact Deployment to General Project

Done, https://packagist.org/packages/drupal/artifact_deployment will be available shortly

Unfortunately, it is not yet working. It seems, that the artifact_deployment is still in https://packages.drupal.org/8 available.

The URL is still working and causes the drush command to be installed wrong with composer.
https://packages.drupal.org/files/packages/8/p2/drupal/artifact_deployme...

Fetching a specific tags shows this issue:
Root composer.json requires drupal/artifact_deployment 1.0.0-beta3 (exact version match), it is satisfiable by drupal/artifact_deployment[1.0.0-beta3] from composer repo (https://repo.packagist.org) but drupal/artifact_deployment[dev-1.0.x, 1.0.0-beta1, 1.0.0-beta2, 1.0.x-dev (alias of dev-1.0.x)] from composer repo (https://packages.drupal.org/8) has higher repository priority. The packages from the higher priority repository do not match your constraint and are therefore not installable. That repository is canonical so the lower priority repo's packages are not installable. See https://getcomposer.org/repoprio for details and assistance.

Can the module fully be removed from the https://packages.drupal.org/8 repo?

Those are now cleared from our CDN cache which was holding onto that content.