Revert "Clean up fully rolled out PolicyEngineMigrationV2Enabled"

Revert submission 28993807-hdop-cleaup

Reason for revert: Droidmonitor created revert due to b/363275535. Will be verifying through ABTD before submission.

Reverted changes: /q/submissionid:28993807-hdop-cleaup

Change-Id: Ic2c256b110c15f46d8f1a5c61b8fac01e76e0e8a
5 files changed