Revert "timekeeping: fix derp"

This reverts commit 8044dedafa70bc0d4617183921115af9d7127ce9.
Revert "[PATCHv2 1/2] sched: Folding nohz load accounting more accurate"

This reverts commit 8bdd5385297068c58c8805ba48dd2b7d10ff4077.