rcu: NO_HZ_FULL_SYSIDLE leftovers

[Valentin Rothberg]

Hi Paul,

I stumbled upon your commit 1cb830954ef9 ("rcu: Remove nohz_full
full-system-idle state machine") as ./scripts/checkkconfigsymbols.py
reported that there are some remaining references on the removed
Kconfig symbol 'NO_HZ_FULL_SYSIDLE'. I couldn't find any commit
removing them on LKML, and as I am unsure if you like to keep the
affected code, I want to report it to you.

To get the report in linux-next:
$ checkkconfigsymbols.py --diff next-20170516..next-20170517 --find

Kind regards,
 Valentin