PRODUCT_SEPOLICY_SPLIT forces Treble tests to run.

This is the flag for when sepolicy is split. Also removed other
commented-out heuristics around fake-treble. We should aim to remove it
entirely instead.

Fixes: 141348590
Test: build w/ and without adding binder_in_vendor_violators to a vendor
    process (and see the expected error there)

Change-Id: I29fb335cc5b5d6e117d93038fe458b8c74acf321
2 files changed