Revert "SELinux: su: update policies"

This reverts commit 04fd9192b05ae2655560a444711fe8859430f439.

Change-Id: I69e51fb6c151a48972cf81947c1c59c6f26f60e9
Merge branch 'cm-12.0' of https://github.com/CyanogenMod/android_vendor_cm into cm-12.0