Revert "Automotive: Disable software.managed_users feature for all"

This reverts commit 7a327f53849d306c69fd6486b0e2a4f286a5ffc0.

Bug: 233893047
Bug: 170332519
Test: no, thanks

Reason for revert: should be disabled only on phone_car

Change-Id: I66f920a95d71e406b99af2a58cab67541925d0bf
1 file changed