Looking at our [[ https://releases-jenkins.wikimedia.org/manage/pluginManager/installed | releases Jenkins plugins ]] and playing with the `jenkins-plugin-manager` there are a few plugins we should be able to remove entirely:
| Bootstrap 4 API | was probably a dependency of Junit which is now using Bootstrap 5 API
| External monitoring job | No more bundled as of 2.303.1
| GitHub, GitHub API, GitHub Branch Source | We do not use GitHub
| JavaScript GUI Lib: Handlebars bundle plugin |
| JavaScript GUI Lib: jQuery bundles (jQuery and jQuery UI) plugin |
| Multijob | Deprecated, no jobs using it
| Oracle Java SE Development Kit Installer | Built-in plugin
| Pam authentication | No more bundled as of 2.303.1
| WMI Windows Agents Plugin | Built-in plugin
| Git server | installed by Pipeline: Deprecated Groovy Libraries itself installed by Pipeline 2.6
Some are probably left over transitive dependencies. The aim is to slightly reduce the scope of plugins we will have to manage via the `jenkins-plugin-manager`.