Currently, when deleting a snapshot repository (by design), we leave the actual files in place so that one can recreate the repository at a later time and it will automatically pick up existing snapshots. It will be nice to provide an option for those who would like the delete snapshot repository to also delete the underlying snapshot files (eg. the "start over" scenario). This is helpful for the case where there are many snapshots in the repository and it will take a while to run individual delete snapshot api calls.