Revert "cpufreq: ondemand: Eliminate the dead band effect in low load"

This reverts commit 3cce881099ab1b6d1313d9307690f7699a5133b1.
Revert "cpufreq: Introduce new relation for freq selection"

This reverts commit db95a22475ad13b933b10d54f62eda635b71a3e7.