removed some file that are no longer required
samsung: exynos4x12 uses its own custom HAL

Change-Id: I90157c4e28de16cb823d4fa458ad44a60cb36596
Exynos4: Fix build

Change-Id: Idb327b37156e2014a34a8831ce6d60769e3217af
hardware_samsung: Add RIL subclass for Exynos4 GSM

Also updated RIL for Lollipop. Fixes sim unlock with PIN code.

I'm still unsure whether this should be merged or not:
https://github.com/CyanogenMod/android_device_samsung_klte/commit/2864552a9399bf31ecfa294b2d97838b5a14353f

Change-Id: Ia9db4cfad07ab58b1d82baffc4b7f44d4c837ae8
ril: fix 2g/3g data on lollipop

credits and thanks to marco9333 and Howard Su