Delete ID3v1 tag from a file (if present).

def delete(cls, filename, offset=None):
        """Delete ID3v1 tag from a file (if present)."""
        with fileutil.opened(filename, "rb+") as file:
            if offset is None:
                file.seek(-128, 2)
            else:
                file.seek(offset)
            offset = file.tell()
            data = file.read(128)
            if data[:3] == b"TAG":
                fileutil.replace_chunk(file, offset, 128, b"", in_place=True)