Remove unused file EffectWorker.h am: 5b8638c66c am: 2ee2dade75

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2746174

Change-Id: I3ee02ee184953f0d4127c3c87355423c325a61eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>