Deleting uploads in bulk?

Given the upcoming updates to free tier file storage limits we have been looking at our file usage. It turns out that one of our projects is using 30.5 GiB of storage on ‘uploads’ but I can’t find any way to see what these files are or delete them. As far as I can tell, it’s very unlikely that we actually need these files and they have just been created over time but never really accessed by us.

Is there any way I am missing to bulk delete these uploads? We don’t want to end up paying $180/year for storage for these files just because we have no way to delete them.