You're seeing just the function
delete, go back to Slack.Web.Files module for more information.
Deletes a file.
file- ID of file to delete.
Errors the API can return:
cant_delete_file- Authenticated user does not have permission to delete this file.
file_deleted- The file has already been deleted.
file_not_found- The file does not exist, or is not visible to the calling user.