MetricsLogger: keep adapterService

The adapterService will outlive any other scope in the app. Cleaning it
is only bugprone as threading is poorly managed

Bug: 393291740
Fix: 393291740
Bug: 393266602
Fix: 393266602
Test: m .
Flag: Exempt trivial
Change-Id: I6385f4de2849d5ad0917080d797c086ef5542c3c