Remove sync script for gitlab-svgs and reference the vendored library directly
This removes the need to manually sync the app/assets/images/illustrations directory manually whenever the @gitlab-org/gitlab-svgs package is updated. This can be error prone when one updates the package.json but forgets to run the sync script (as in gitlab-org/gitlab-ce!17650). Sprockets will now reference the node_modules directory directly.
Edited by Mike Greiling