Revert "again corrections to LOAD_FREQ calculation (thx again AndreiLux) + added comments how these values actually get calculated"

This reverts commit 17b061dc2b3765f8506637f3d2c07cd6ebf4dc2e.
Revert ' [PATCH] sched: Fix loadavg calculations (patch by AndreiLux: https://…

…gist.github.com/AndreiLux/5411832)'