Remove unused field save_rollback_data

save_rollback_data is inherited from ChromeOS to persist data
after a data wipe. Android never supported this feature, remove
unused code.

Test: th
Bug: 377557752
Change-Id: I022577bb19cd27010ffe0236b2659fe7880f03c4
diff --git a/payload_consumer/postinstall_runner_action.cc b/payload_consumer/postinstall_runner_action.cc
index 02417be..5a6eeab 100644
--- a/payload_consumer/postinstall_runner_action.cc
+++ b/payload_consumer/postinstall_runner_action.cc
@@ -127,8 +127,7 @@
   // that retains a small amount of system state such as enrollment and
   // network configuration. In both cases all user accounts are deleted.
   if (install_plan_.powerwash_required) {
-    if (hardware_->SchedulePowerwash(
-            install_plan_.rollback_data_save_requested)) {
+    if (hardware_->SchedulePowerwash()) {
       powerwash_scheduled_ = true;
     } else {
       return CompletePostinstall(ErrorCode::kPostinstallPowerwashError);