[automerger skipped] Effect AIDL: remove placeholder effect from default implementation am: f84adb0fad -s ours

am skip reason: Merged-In Icf15e349a2ad36eeefa1e3eb46428c04ae164ad1 with SHA-1 7a0eb7b7a7 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/26519773

Change-Id: I0c4a63505e6ba574229ce983fbedd245792feefe
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>