Reason
All the code of VidoeCutTool is now present at https://gerrit.wikimedia.org/r/admin/repos/labs/tools/VideoCutTool so we no longer need the below two repositories and three tools at toolforge.

Code Repositories:

• https://toolsadmin.wikimedia.org/tools/id/video-cut-tool-back-end
• https://toolsadmin.wikimedia.org/tools/id/video-cut-tool-front-end

Tools:

• https://toolsadmin.wikimedia.org/tools/id/video-cut-tool-back-end
• https://toolsadmin.wikimedia.org/tools/id/video-cut-tool-front-end
• https://toolsadmin.wikimedia.org/tools/id/wiki-irc

To-do list

• This task
  • Add maintainers of that extension/skin as subscribers to this task (if they have no apparent Phabricator account, notify them on-wiki or via email if possible and note it here).
  • Add Phabricator project <#ProjectX> as a tag for this task, and remove MediaWiki-extensions-Other/Other-skins as appropriate.
• On-wiki documentation
  • Update Wikidata item (provide URL) associated with documentation page
  • Phabricator
  • Mark all Phabricator tasks for the extension/skin either Declined or Invalid. Add a comment pointing to this task when doing so for reference.
  • Archive Phabricator project <#ProjectX> for the extension/skin.
  • Edit Phabricator project <#ProjectX> description for the extension/skin with a link to this ticket.
• Translatewiki.net/translations
  • Remove from translatewiki.net (groups/MediaWiki/mediawiki-extensions.txt / groups/MediaWiki/mediawiki-skins.txt).
• Configuration/tests/integrations/etc.
  • Remove tests in integration/config (zuul/layout.yaml).
  • Remove from https://doc.wikimedia.org/cover-extensions/ if present (requires Continuous-Integration-Infrastructure shell user to delete directly from the server).
• Repositories
  • Empty repository, leaving only the README indicating the repo is archived, and referring to this task by URL.
  • Mark the repository read-only in Gerrit (also edit description to prepend "[ARCHIVED]" and a reference to this task): (provide Gerrit Repository URL). - https://gerrit.wikimedia.org/r/admin/repos/labs/tools/video-cut-tool-worker & https://gerrit.wikimedia.org/r/admin/repos/labs/tools/video-cut-tool-back-end
  • Archive the Diffusion repository for the tool: (provide the Diffusion repository callsign or URL). - https://toolsadmin.wikimedia.org/tools/id/video-cut-tool-back-end & https://toolsadmin.wikimedia.org/tools/id/video-cut-tool-front-end
  • Delete the GitHub mirror: (provide GitHub repository URL).