sched: remove wait bookmarks

mainline inclusion
from mainline-v6.7-rc1
commit 37acade0ce8938f00d6979bd02b8043b5b7089ae
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I93R1D
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=37acade0ce8938f00d6979bd02b8043b5b7089ae

--------------------------------

There are no users of wait bookmarks left, so simplify the wait
code by removing them.

Link: https://lkml.kernel.org/r/20231010035829.544242-2-willy@infradead.org


Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Benjamin Segall <bsegall@google.com>
Cc: Bin Lai <sclaibin@gmail.com>
Cc: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Zizhi Wo <wozizhi@huawei.com>

Conflicts:
	include/linux/wait.h
	kernel/sched/wait.c