Remove APEX sepolicy support am: e9448817b3

Original change: https://android-review.googlesource.com/c/platform/external/selinux/+/2736178

Change-Id: I784f0839f4ce0d1aee5f87837529acd328f3e6f3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>