vts: Fix incorrect instance name in Teardown am: a6cc5825e9 am: 9ce5301add am: 676d1b13dc

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/12422070

Change-Id: I5bb711148ae6ba355b6c0af62a0100718eb0a0f7