Change the old experiment setup to use the new API

Vendors can still set the default behavior by pm.dexopt.priv-app-oob*
system properties, but still the experiment flag can override the
behavior.

This change also removes the audit log because the setting provider is
not ready.  The old code works because we use the default system property
(which may be inconsistent to settings).

Test: cmd package compile -m speed -f com.google.android.dialer
      am start com.google.android.dialer
      cat /proc/`pidof com.google.android.dialer`/maps |grep oat |grep /data
      # Compiled code IS mapped as executable
Test: device_config put fsi_boot oob_enabled true
      pkill com.google.android.dialer; am start ...
      # Compiled code is NOT mapped as executable
Test: device_config put fsi_boot oob_enabled false
      # Compiled code IS mapped as executable
Test: device_config put fsi_boot oob_enabled true
      device_config put fsi_boot oob_whitelist com.android.vending,com.example
      # Compiled code is NOT mapped as executable
Test: device_config put fsi_boot oob_enabled true
      device_config put fsi_boot oob_whitelist com.android.vending,com.google.android.dialer
      # Compiled code IS mapped as executable
Test: device_config reset untrusted_clear
      # Compiled code IS mapped as executable
Test: atest DexManagerTests
Bug: 120793002
Change-Id: I67f29ac593bd2c33dc8c75ce2135cf9ec5490650