lsd: Don't use long options in the ls(1) alias

lsd: Don't use long options in the ls(1) alias

Both the "--date" and "--group-dirs" options are "nice", and I'd like to
set them here, but it looks like long options break the file name
completion logic: when a long option is present, you can't tab-complete
any file or folder name any more, which is _really_ annoying!

So remove those options again (for now)!?

If you wan't to use long options, like the ones removed now here, you
can use a configuration file in ~/.config/lsd/config.yaml, for example.