Revert of [Identity Service] Add service tests of IdentityManager

services/identity/BUILD.gn

 # Copyright 2017 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/catalog/public/tools/catalog.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 
 source_set("lib") {
   sources = [
     "identity_manager.cc",
     "identity_manager.h",
     "identity_service.cc",
     "identity_service.h",
   ]
 
   deps = [
     "//base",
     "//components/signin/core/account_id",
     "//components/signin/core/browser",
     "//services/identity/public/interfaces",
     "//services/service_manager/public/cpp",
     "//services/service_manager/public/interfaces",
   ]
 }
 
 service_manifest("manifest") {
   name = "identity"
   source = "manifest.json"
 }
-
-source_set("tests") {
-  testonly = true
-  deps = [
-    ":lib",
-    "//base",
-    "//base/test:test_support",
-    "//components/signin/core/account_id",
-    "//components/signin/core/browser",
-    "//components/signin/core/browser:test_support",
-    "//components/sync_preferences:test_support",
-    "//mojo/public/cpp/bindings:bindings",
-    "//services/identity/public/interfaces",
-    "//services/service_manager/public/cpp",
-    "//services/service_manager/public/cpp:service_test_support",
-    "//testing/gmock",
-    "//testing/gtest",
-  ]
-  sources = [
-    "identity_manager_unittest.cc",
-  ]
-}
-
-service_manifest("unittest_manifest") {
-  name = "identity_unittests"
-  source = "unittest_manifest.json"
-  packaged_services = [ ":manifest" ]
-}
-
-catalog("tests_catalog") {
-  testonly = true
-  embedded_services = [ ":unittest_manifest" ]
-}