Remove dead code. am: 2422319cb7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1703126

Change-Id: I7c3990ac8943e30fae0508a1bda55db02e019a90
tree: 309c044bdf61499d78597b371241ed251b7986a9
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING