Merge "Revert "Add soong config variables for selinux_policy_system in ...""...

Merge "Revert "Add soong config variables for selinux_policy_system in ..."" into main am: b4fc9b9e

Original change: https://android-review.googlesource.com/c/platform/build/+/3295415



Change-Id: I3bc29ebb533e039f99ecaf6ef312531431f85103
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>