Revert "EnvironmentalReverb: Add AIDL placeholder implementation and its unit test"

This reverts commit f6a5027eeab7dcc395e2c8e0f8b2a4f370e0dc99.

Reason for revert: DroidMonitor-triggered revert due to breakage b/263347243

Change-Id: I3b60cbab0693f4db90dd438313587880c6be2cae
Bug: 263347243
7 files changed