Revert "PM / Sleep: Fix build warning in sysfs.c for CONFIG_PM_SLEEP unset"

This reverts commit f3e1d49836bf264e0b6014cf51a2640f593548a3.
Revert "PM / Domains: Fix build warning for CONFIG_PM_RUNTIME unset"

This reverts commit 2b9183f100b5aa9e9c420de09bd0220ca80636e0.