Revert "recovery: report compliant reboot reason"

This reverts commit 6f4e4db4f9e0911a07c6393d01e4380e844f7891.

Reason for revert: Booting out of recovery (choose `Reboot system now`)
on taimen is broken. Device keeps booting back into recovery.

Bug: 133326470
Test: Choose `Reboot system now` from recovery menu. Deivce attempts
      normal boot.
Change-Id: I6e85fc248e18953a6fb94513c3abc7e7e0fb0477
diff --git a/recovery_ui/ui.cpp b/recovery_ui/ui.cpp
index fc51775..7ea9307 100644
--- a/recovery_ui/ui.cpp
+++ b/recovery_ui/ui.cpp
@@ -375,7 +375,7 @@
 
       case RecoveryUI::REBOOT:
         if (reboot_enabled) {
-          Reboot("recovery_ui");
+          Reboot("");
           while (true) {
             pause();
           }