[automerger skipped] Merge "Remove unused testutils lib from tethering tests"...

[automerger skipped] Merge "Remove unused testutils lib from tethering tests" into android11-tests-dev am: 2a7f86bb -s ours

am skip reason: skipped by user levarum

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1437391

Change-Id: I1c77070ef770ad26111e2a87ce8992c7fd9fe874