Merge "Revert "[Tethering] Add MTS method to TetheringManagerTest."" am: 16a9c43b37

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2120221

Change-Id: Ic352b1b472e6aa2ad81fcd10d1145aef277e2595
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>