Merge "Revert "Add hidden API getDataSaverViaCmFlag() for CTS"" into main am: 0a4ba7bfca am: aac334a31b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2836418

Change-Id: Ib65429b0b15c7881ef4a1ac81d82a3510c185901
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>