The new subcommand that takes these options is 'git notes edit'. Just
accept the options from subcommands since we handle them the same way
in builtin/notes.c anyway. If a user does
git prune --reuse-message=...
just let the command catches that error when it's executed.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>