This function's [only usage](https://github.com/search?q=org%3Anextstrain+resolve_filepaths+-path%3A**%2Fsnakemake%2Fconfig.smk+path%3A*.smk&type=code) will be removed by https://github.com/nextstrain/measles/pull/90.
This function's only usage will be removed by nextstrain/measles#90.