[LTP] [PATCH v3 1/5] m4: remove useless ltp-securebits.m4

[Petr Vorel]

Hi Yang,

> Since commit fe9d9218c, we have detected linux/securebits.h in
> confiure.ac. one place used the HAVE_SECUREBITS(ltp-securebits.m4
> defined), it only controls compile. kernel/security/securebits/
> check_keepcaps.c has HAVE_LINUX_SECUREBITS_H check in internal,
> so removing it is safe.

> Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
> Reviewed-by: Xiao Yang <ice_yangxiao@163.com>
Whole patchset merged (with tiny changes in commit messages).
Thanks for this cleanup and speedup!

Kind regards,
Petr