Revert "CPU a 1.5gHz & CONFIG_HZ a 250 por defecto"

This reverts commit 0e6ab86104198ca780c45825147ae0e59658dfe1.
Revert "Activado SCHED_AUTOGROUP"

This reverts commit 9933152e062b2c88b86c966afd85d33add9ef37a.