Revert "Migrate AuthFsHostTest to use MicrodroidBuilder" am: 4bdd2e837d am: a6cd574a1c am: 11bd2b6ea4

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2060031

Change-Id: I7909770ac4ca827d554b061c5f08913213759aa4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>