Remove testing of bdm v1 in boot from volume tests

The BDM v1 payload in Nova is really really old, and we don't even
document it anywhere anymore (it's actually unclear if this was ever
documented).

Just use the BDM v2 payload, don't run all these tests twice.

Change-Id: I1be3c16e499ac0131b24b889f17361d4a1835f02
1 file changed