Drop the plan state from the store and the assignments: migration 0108 and placement-only assignments (release 6, issue 1945 B9, B4)

internal/inventory/chain_pending_test.go

@@ -77,9 +77,6 @@ func TestARecordedPendingIsSkippedByAssignedAndTheJoins(t *testing.T) {
 	if running, _ := inv.Running(ctx, "web"); len(running) != 0 {
 		t.Fatalf("running %v", running)
 	}
-	if runs, _ := inv.AssignmentRuns(ctx, node); len(runs) != 0 {
-		t.Fatalf("runs %v", runs)
-	}
 	entries, _ := inv.Catalogued(ctx)
 	for _, e := range entries {
 		if e.Manifest.Module == "web" && len(e.On) != 0 {