Remove more dead app list code.

ui/app_list/app_list_view_delegate.cc

Index: ui/app_list/app_list_view_delegate.cc
diff --git a/ui/app_list/app_list_view_delegate.cc b/ui/app_list/app_list_view_delegate.cc
deleted file mode 100644
index 658fdda1960527c4c1effd526a1a998af2d99118..0000000000000000000000000000000000000000
--- a/ui/app_list/app_list_view_delegate.cc
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright 2013 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 "ui/app_list/app_list_view_delegate.h"
-
-namespace app_list {
-
-AppListViewDelegate::User::User() : active(false) {
-}
-
-AppListViewDelegate::User::User(const User& other) = default;
-
-AppListViewDelegate::User::~User() {}
-
-}  // namespace app_list