Remove ash-disable-launcher-per-display flag

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 1060 matching lines @@
     SINGLE_VALUE_TYPE(switches::kFileManagerLegacy),
   },
   {
     "file-manager-legacy-ui",
     IDS_FLAGS_FILE_MANAGER_LEGACY_UI_NAME,
     IDS_FLAGS_FILE_MANAGER_LEGACY_UI_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kFileManagerLegacyUI),
   },
   {
-    "disable-launcher-per-display",
-    IDS_FLAGS_DISABLE_LAUNCHER_PER_DISPLAY_NAME,
-    IDS_FLAGS_DISABLE_LAUNCHER_PER_DISPLAY_DESCRIPTION,
-    kOsCrOS,
-    SINGLE_VALUE_TYPE(ash::switches::kAshDisableLauncherPerDisplay),
-  },
-  {
     "disable-app-mode",
     IDS_FLAGS_DISABLE_KIOSK_APPS_NAME,
     IDS_FLAGS_DISABLE_KIOSK_APPS_DESCRIPTION,
     kOsCrOSOwnerOnly,
     SINGLE_VALUE_TYPE(switches::kDisableAppMode),
   },
   {
     "disable-force-fullscreen-app",
     IDS_FLAGS_DISABLE_FULLSCREEN_APP_NAME,
     IDS_FLAGS_DISABLE_FULLSCREEN_APP_DESCRIPTION,
@@ skipping 861 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags