cleanup: Remove applist v1 code.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 6857519f59db86bf6bafea80d694df4b4a1da95d..5229d268b9a245ad932989210fca19df4f212304 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -172,24 +172,13 @@ void CreateSpecialContainers(aura::RootWindow* root_window) {
                   "PanelContainer",
                   non_lock_screen_containers);
 
-  // V1 Applist container is below launcher container.
-  bool use_v2_applist = internal::AppListController::UseAppListV2();
-  if (!use_v2_applist) {
-    CreateContainer(internal::kShellWindowId_AppListContainer,
-                    "AppListContainer",
-                    non_lock_screen_containers);
-  }
-
   CreateContainer(internal::kShellWindowId_LauncherContainer,
                   "LauncherContainer",
                   non_lock_screen_containers);
 
-  // V2 Applist container is above launcher container.
-  if (use_v2_applist) {
-    CreateContainer(internal::kShellWindowId_AppListContainer,
-                    "AppListContainer",
-                    non_lock_screen_containers);
-  }
+  CreateContainer(internal::kShellWindowId_AppListContainer,
+                  "AppListContainer",
+                  non_lock_screen_containers);
 
   aura::Window* modal_container = CreateContainer(
       internal::kShellWindowId_SystemModalContainer,