re-enable test

backend/local/backend_plan_test.go

@@ -478,12 +478,6 @@ Plan: 1 to add, 0 to change, 1 to destroy.`
 }
 
 func TestLocal_planRefreshFalse(t *testing.T) {
-	// since there is no longer a separate Refresh walk, `-refresh=false
-	// doesn't do anything.
-	// FIXME: determine if we need a refresh option for the new plan, or remove
-	// this test
-	t.Skip()
-
 	b, cleanup := TestLocal(t)
 	defer cleanup()