pvmfw: Clean up test data for mocking crosvm DT am: cb0d45d175

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2854487

Change-Id: Ia59478f536ba0974719aaa0de7918fb13778beae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>