Revert "rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()"

This reverts commit 224fd631 which is
commit fd70e9f1 upstream.

It is reported to cause problems in testing, so revert it for now.

Link: https://lore.kernel.org/r/20241216-comic-handling-3bcf108cc465@wendy


Reported-by: Conor Dooley <conor.dooley@microchip.com>
CC: Zhixu Liu <zhixu.liu@gmail.com>
Cc: Zqiang <qiang.zhang1211@gmail.com>
Cc: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>
Cc: Xiangyu Chen <xiangyu.chen@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>