Remove KernelTweaker from our builds (1/3)

Two reasons:

1. Some devices use stock kernel on their builds, which makes no sense for customizing the kernel stuff. So install the actual app or any kernel tweaking app from the PlayStore instead.
2. Bloats the ROM
Merge branch 'kitkat-remix' of github.com:AOSPAL/android_vendor_psd into kitkat-remix