refs #18562 [finc] remove content for gitlab-ci temporarily

.gitlab-ci.yml

-#packagist:
-#  image:
-#    name: byrnedo/alpine-curl:0.1
-#    entrypoint: ['/bin/sh', '-c']
-#  script: |
-#    echo "Publishing composer package..."
-#    export URL="https://packagist.org/packages/finc/rvk-tree"
-#    /usr/bin/curl --header 'content-type:application/json' \
-#      --data "{\"repository\":{\"url\":\"$URL\"}}" \
-#      $PACKAGIST_UPDATE_URL
-#  tags: [docker]
-#  only: [/^(v|master)/]