Remove debug code before beta release.

Remove the debug code for feature:
1. Background started FGS while-in-use permission restriction
2. Foreground service type camera and microphone.

Bug: 158579189
Test: atest cts/tests/app/src/android/app/cts/ActivityManagerApi29Test.java
atest cts/tests/app/src/android/app/cts/ActivityManagerFgsBgStartTest.java
atest cts/tests/app/src/android/app/cts/ActivityManagerProcessStateTest.java

Change-Id: I9669db918af3740509a090c3075d93588110cea1