Revert "increase l2 voltages"

This reverts commit 985c6e2bfa4354a0d40ec1e0b8300038890b66e1.
Revert "more agressive ramp up on the l2 cache as the cpu freq increases"

This reverts commit 29071d4c0a5c66ec733bbfe9cf5c9e6e26bf9036.