Revert "Tegra3 GPU OC to 446MHZ - Part 2"

This reverts commit 6f3c7690e4353bf1bb4254c586dbd574faf60845.
Revert "Tegra3 GPU OC to 446MHZ"

This reverts commit 2bc99033272164d0426d82f7cea5afff6237f0dc.