Delete the tracing service

mash/quick_launch/quick_launch.cc

Index: mash/quick_launch/quick_launch.cc
diff --git a/mash/quick_launch/quick_launch.cc b/mash/quick_launch/quick_launch.cc
index 05b68ac1409cbac9b4580e2cded27ac9c1aa692f..32793e30818f5382b3d040e853f6e7b5197ab2e4 100644
--- a/mash/quick_launch/quick_launch.cc
+++ b/mash/quick_launch/quick_launch.cc
@@ -18,7 +18,6 @@
 #include "services/service_manager/public/cpp/service.h"
 #include "services/service_manager/public/cpp/service_context.h"
 #include "services/service_manager/public/cpp/service_runner.h"
-#include "services/tracing/public/cpp/provider.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/views/background.h"
@@ -170,8 +169,6 @@ void QuickLaunch::RemoveWindow(views::Widget* window) {
 }
 
 void QuickLaunch::OnStart() {
-  tracing_.Initialize(context()->connector(), context()->identity().name());
-
   aura_init_ = base::MakeUnique<views::AuraInit>(
       context()->connector(), context()->identity(), "views_mus_resources.pak",
       std::string(), nullptr, views::AuraInit::Mode::AURA_MUS);