Merge "Tethering: remove dead code" am: abc0246c4f

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2138294

Change-Id: I70dbd277d7ba6085b56a5824fe177731489a8e74
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>