Revert "Galaxy Nexus: Franco kernel (2/2)"

This reverts commit 875e05b3c953a74269d575d34373f6fa6a57ebe2.
use CM kernel

There are some problems with the franco kernel and Android 4.4 so we'll use the CM kernel instead.

Change-Id: I143bec90d9c17d851cb0b8e1207405672f6c8fc5