Delete keymaster2 tests. am: a7b61e5ff3 am: 5019aecd86 am: c675213eaa am: 78e1f55b46

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/1742652

Change-Id: I20b0aa25b68031493753823b4865038de93476af