Revert "Add Kernel Tweaker"

This reverts commit 3481ded9f23c2b5d0146f9fc984fd22c7da375fb.
selinux: Add a rule to label the extended keyhandler dex files

These should be treated as regular dex cache files, but they're
expanded outside of the normal cache dir

Change-Id: Id046e1b90116b35d2e7817ed4717fcef78135f08