Revert of Update AuraInit to handle failed initialization

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 2f2d2ed48b8b63592de2bc8415007a2cf45f3049..274c231ecc303988d8c33710f919f87b33c3467a 100644
--- a/ash/mus/window_manager_application.cc
+++ b/ash/mus/window_manager_application.cc
@@ -129,14 +129,10 @@
   mojo_interface_factory::RegisterInterfaces(
       &registry_, base::ThreadTaskRunnerHandle::Get());
 
-  aura_init_ = views::AuraInit::Create(
+  aura_init_ = base::MakeUnique<views::AuraInit>(
       context()->connector(), context()->identity(), "ash_mus_resources.pak",
       "ash_mus_resources_200.pak", nullptr,
       views::AuraInit::Mode::AURA_MUS_WINDOW_MANAGER);
-  if (!aura_init_) {
-    context()->QuitNow();
-    return;
-  }
   window_manager_ = base::MakeUnique<WindowManager>(
       context()->connector(), ash_config_, show_primary_host_on_connect_);