Revert of ash: Add checks for supervised users.

ash/test/test_system_tray_delegate.cc

Index: ash/test/test_system_tray_delegate.cc
diff --git a/ash/test/test_system_tray_delegate.cc b/ash/test/test_system_tray_delegate.cc
index 60fb4b31e1fc4fc81fba6b930baad00985792c7b..c4a45b9df7326a3844cf5723db8a3bbeb7f00711 100644
--- a/ash/test/test_system_tray_delegate.cc
+++ b/ash/test/test_system_tray_delegate.cc
@@ -8,7 +8,6 @@
 
 #include "ash/session/session_state_delegate.h"
 #include "ash/shell.h"
-#include "ash/system/user/login_status.h"
 #include "base/message_loop/message_loop.h"
 #include "base/time/time.h"
 
@@ -70,10 +69,6 @@
   return login_status_;
 }
 
-bool TestSystemTrayDelegate::IsUserSupervised() const {
-  return login_status_ == ash::user::LOGGED_IN_SUPERVISED;
-}
-
 bool TestSystemTrayDelegate::ShouldShowDisplayNotification() {
   return should_show_display_notification_;
 }