Cleanup build trace chunks for jobs that are already fully archived

gitlab-org/gitlab#330141 (comment 572152826) identifies the possibility of, and https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/13342#note_572292462 documents a bit more detail of identifying, jobs where the log has been collated/archived (from trace chunks) to permanent Object Storage, but the chunks are still recorded in the database (ci_build_trace_chunks).

We should clean these up as they are just cluttering up ci_build_trace_chunks and may be contributing to the inability of the Archive cron worker to clean up what's left.