A "remove self" method for a FileSystemHandle. Currently, it is not possible to remove a file or directory given its handle. You must obtain the handle of the parent directory and call FileSystemDirectoryHandle.removeEntry(). This method enables the common use case where you obtain a file handle from showSaveFilePicker(), but then decide you don't want to save after all, and delete the file.
Explainers: https://github.com/whatwg/fs/pull/9 https://github.com/a-sully/fs/pull/1