ci: remove unused yaml (to trigger repull of component)

# sync /doc/ to internal wiki repo for UI access

# see #151

build-wiki:

  image: alpine

  stage: build

  before_script:

    - apk add --no-cache git git-subtree

  script:

    - git config user.email "ci@sc07.company"

    - git config user.name "ci"

    - git remote remove gitlab-wiki || true

    - git remote add gitlab-wiki "https://ci:$CI_JOB_TOKEN@sc07.dev/sc07/canvas.wiki.git"

    - git status

    - git checkout main

    - git pull gitlab-wiki main --rebase

    - git push gitlab-wiki `git subtree split -P doc main`:main --force