cm-12.0: remove patches of merged commits

https://github.com/CyanogenMod/android_frameworks_base/commit/049981cbf6fbfdae84555a718411a51e1c9f8cab
https://github.com/CyanogenMod/android_frameworks_base/commit/6d457b9b10d5ec605984c2a4c4e6d206be5874ee
https://github.com/CyanogenMod/android_frameworks_base/commit/ad84082ea32b1292c407f3908db740ee996d9333