[Service Manager] Get rid of dynamic service discovery

services/service_manager/BUILD.gn

 # Copyright 2014 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.
 
 import("//services/service_manager/public/service_manifest.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 group("all") {
   testonly = true
@@ skipping 28 matching lines @@
     "//services/service_manager/public/cpp:sources",
     "//services/service_manager/public/interfaces",
     "//services/service_manager/runner/host:lib",
     "//services/tracing/public/interfaces:constants",
   ]
 
   public_deps = [
     # ApplicationManager exposes and uses PackageManager types in its header.
     "//services/catalog:lib",
   ]
-
-  data_deps = [
-    ":manifest",
-  ]
 }
 
 service_manifest("manifest") {
   name = "service_manager"
   source = "manifest.json"
 }