
As nova_placement -> placement takes place in S->T upgrade,
we don't need this code anymore, as S->U is not supported anyway,
and T->U don't need placement to be migrated again
This reverts commit 3d6cedf859
.
Depends-On: https://review.opendev.org/692509
Change-Id: I281d8974ee22e65da8d03c6784bcbbbe79648351