[uber page] Remove extensions sub-page from options2.

chrome/browser/resources/options2/pack_extension_overlay.css

Index: chrome/browser/resources/options2/pack_extension_overlay.css
===================================================================
--- chrome/browser/resources/options2/pack_extension_overlay.css	(revision 114515)
+++ chrome/browser/resources/options2/pack_extension_overlay.css	(working copy)
@@ -1,18 +0,0 @@
-/*
-Copyright (c) 2011 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.
-*/
-
-.packExtensionHeading {
-  width: 520px;
-  padding-bottom: 5px;
-}
-
-.packExtensionTextBoxes {
-  text-align: right;
-}
-
-.packExtensionTextArea {
-  width: 260px;
-}