Revert all the things

This reverts commit bfac3d9b6635d5f57a419ff3b1f9f652a0a769d0.
Revert "CM System/Core"

This reverts commit 4978b52af8ea5b936a9dd587db0a229694979f0d.
Revert "system/core: jb43-legacy"

This reverts commit 661c99aeece5197d6489c71a5af9b2455d35e3b7.
Revert "track own system/core"

This reverts commit c136157f3ba099d6e7e0d5d0df30b195be4a1640.
Revert "RVT"

This reverts commit 8f070d93ff7cae148104e4ee7cbeea0b527b21be.
Revert "lets retrack PA Libcore"

This reverts commit 1873a2593b988a00452ae1fc82221d03d904f59d.