Revert "Adapt to libprocessgroup API changes for polling on cgro..."

This revert was created by Android Culprit Assistant. The culprit was identified in the following culprit search session (http://go/aca-get/91da3c52-9b76-498b-bdbd-a9de7d7ff53b).

Change-Id: Ib6098ab1fcfc29cd4f54d334816f31b7736254d5
2 files changed