msm8226-common: Remove unused files

* These files never got cleaned up, remove them.
msm8226-common: Use on-device keymaster firmware
msm8226-common: Update libwvdrmengine

* Motorola package version: RETAIL-BR-SS_4.4.4_KXB21.14-L1.40_42
msm8226-common: Import original unaltered apks/jars

* Build process will resign these with the correct keys
* Motorola package version: RETAIL-BR-SS_4.4.4_KXB21.14-L1.40_42
msm8226-common: Roll back to 04/29 3.5.2.2 EGL libraries
msm8226-common: Hexedit libqc-opt for icu4c version 53
msm8226-common: Update prebuilt APK location