Merge "Revert "Add hidden API getDataSaverViaCmFlag() for CTS"" into main am: 0a4ba7bfca am: aac334a31b am: d7e633f851

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

Change-Id: Ice597ff664f8f0cf4a5d923e8643b674d0c4d140
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>