Effect AIDL: remove placeholder effect from default implementation

Also add two missing test class to postsubmit

Bug: 328330990
Test: atest --test-mapping hardware/interfaces/audio/aidl/vts:presubmit
Test: atest --test-mapping hardware/interfaces/audio/aidl/vts:postsubmit
Change-Id: I9f9b9feda9ca99e6a065e837fa77dc621ad35bb1
2 files changed