Revert "acpuclock-8064: since we aren't going very high with the the"

This reverts commit 4b928420b7c0c4353da1203afca1dd8d44d0b4fc.
Revert "apuclock-8064: Add CPU overclocking steps (1.56GHz, 1.62GHz,1.67GHz)"

This reverts commit ae39fde5be4c98187609d3afd12cc4770dcc92b1.