clock-8x60 : Remove MDP clock freqs not used in original panel driver

based on https://github.com/sultanxda/sultan-kernel-pyramid-pure-CAF-3.4/commit/489ebc9d7ed789409060c7f9fed66c520b905568

In the original 3.0.16 panel driver, HTC specified a set of MDP clocks to use for scaling: 59MHz, 128MHz, 160MHz, and 200MHz.

This fixes the visual glitch where the very leftmost column of pixels copying what the very rightmost column of pixels displays.

Change-Id: I64f5ee3f530051947a79ca461f9df3ea4eab9f3e