Clean up flags that already launched

The flags included:
1. android.companion.device_presence
2. android.companion.association_failure_code
3. android.companion.new_association_builder

Test: cts
bug: 330793558
fix: 418792859
Flag: android.companion.device_presence
Change-Id: I6c37e91ede557b72a2d58ecef4903ec789126545