m7spr: remove unneeded overlay definition

Change-Id: I422e2d69245597cb7b2d498377f6083b64b5253c
m7spr: remove unneeded vendorsetup.sh

Change-Id: Ifb2a2ff13410ba16fd220b0028153d369dd3608b
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_htc_m7spr into cd-4.4