Removes example code that isn't correctly wired up

ash/mus/window_manager_application.cc

Index: ash/mus/window_manager_application.cc
diff --git a/ash/mus/window_manager_application.cc b/ash/mus/window_manager_application.cc
index a151caa2615786b129a30e8033f00824f73681d4..c4b2a554aedd8e30c4b5bac3daaedaea8a9a327e 100644
--- a/ash/mus/window_manager_application.cc
+++ b/ash/mus/window_manager_application.cc
@@ -40,8 +40,7 @@
 namespace ash {
 namespace mus {
 
-WindowManagerApplication::WindowManagerApplication()
-    : screenlock_state_listener_binding_(this) {}
+WindowManagerApplication::WindowManagerApplication() {}
 
 WindowManagerApplication::~WindowManagerApplication() {
   // Destroy the WindowManager while still valid. This way we ensure
@@ -151,18 +150,8 @@ bool WindowManagerApplication::OnConnect(
   // Register services used in both classic ash and mash.
   mojo_interface_factory::RegisterInterfaces(
       registry, base::ThreadTaskRunnerHandle::Get());
-
-  if (remote_info.identity.name() == "mash_session") {
-    context()->connector()->ConnectToInterface(remote_info.identity, &session_);
-    session_->AddScreenlockStateListener(
-        screenlock_state_listener_binding_.CreateInterfacePtrAndBind());
-  }
   return true;
 }
 
-void WindowManagerApplication::ScreenlockStateChanged(bool locked) {
-  window_manager_->SetScreenLocked(locked);
-}
-
 }  // namespace mus
 }  // namespace ash