grouper: Remove Trebuchet overlay

Change-Id: I955911ded41e9a78925971f6042a865caf390014
sepolicy: sysfs_devices_system_cpu is now in the central policy

Change-Id: I48e3a659ec27e006a02588b86c6ca8f951682b6a
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_asus_grouper into HEAD