Revert "Create a car user service that creates a secondary admin on first run."

Bug: 79536548
Test: Build


This reverts commit 5bdb9e5b32f8199dbded0c76ce5302d105be0f29.

Reason for revert: Do it later.

Change-Id: Ice8a9c6e94b3a1758d9108725950e8bdaea0fc0b
5 files changed