Function simplify 

pub fn simplify<E: Endianness>(
    _global_args: GlobalArgs,
    args: CliArgs,
) -> Result<()>
where
    MmapHelper<u32>: CodesReaderFactoryHelper<E>,
    for<'a> LoadModeCodesReader<'a, E, Mmap>: BitSeek + Clone + Send + Sync,