Remove multi-install from chrome/installer/setup.

chrome/installer/setup/BUILD.gn

 # 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.
 
 import("//chrome/process_version_rc_template.gni")
 import("//testing/test.gni")
 
 if (is_win) {
   executable("setup") {
     sources = [
@@ skipping 16 matching lines @@
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
       "//chrome/install_static:install_static_util",
       "//components/crash/content/app:app",
       "//components/crash/content/app:run_as_crashpad_handler",
     ]
   }
 
   static_library("lib") {
     sources = [
-      "app_launcher_installer.cc",
-      "app_launcher_installer.h",
       "archive_patch_helper.cc",
       "archive_patch_helper.h",
       "install.cc",
       "install.h",
       "install_worker.cc",
       "install_worker.h",
       "installer_crash_reporter_client.cc",
       "installer_crash_reporter_client.h",
       "installer_crash_reporting.cc",
       "installer_crash_reporting.h",
@@ skipping 67 matching lines @@
       "//testing/gmock",
       "//testing/gtest",
     ]
 
     data = [
       "//chrome/installer/test/data/",
       "//chrome/test/data/installer/",
     ]
   }
 }