vts: Fix incorrect instance name in Teardown am: a6cc5825e9 am: 9ce5301add am: 04d7e84c6e

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

Change-Id: Ia07a1c4345f00d4d2d2fedb5fdd9fb980a23bda0