Delete the tracing service

services/tracing/public/cpp/BUILD.gn

Index: services/tracing/public/cpp/BUILD.gn
diff --git a/services/tracing/public/cpp/BUILD.gn b/services/tracing/public/cpp/BUILD.gn
deleted file mode 100644
index a3f8cc13455439b1724d1d71eefb340e8edfe093..0000000000000000000000000000000000000000
--- a/services/tracing/public/cpp/BUILD.gn
+++ /dev/null
@@ -1,19 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-source_set("cpp") {
-  sources = [
-    "provider.cc",
-    "provider.h",
-    "switches.cc",
-    "switches.h",
-  ]
-
-  deps = [
-    "//base",
-    "//mojo/public/cpp/bindings",
-    "//services/service_manager/public/cpp",
-    "//services/tracing/public/interfaces",
-  ]
-}