Remove bzip2 code since it is no longer being used.

third_party/bzip2/bzip2.gyp

Index: third_party/bzip2/bzip2.gyp
===================================================================
--- third_party/bzip2/bzip2.gyp	(revision 199288)
+++ third_party/bzip2/bzip2.gyp	(working copy)
@@ -1,79 +0,0 @@
-# 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.
-
-{
-  'variables': {
-    'conditions': [
-      [ 'toolkit_uses_gtk==1', {
-        # Link to system .so since we already use it due to GTK.
-        'use_system_bzip2%': 1,
-      }, {  # toolkit_uses_gtk!=1
-        'use_system_bzip2%': 0,
-      }],
-    ],
-  },
-  'conditions': [
-    ['use_system_bzip2==0', {
-      'targets': [
-        {
-          'target_name': 'bzip2',
-          'type': 'static_library',
-          'defines': ['BZ_NO_STDIO'],
-          'sources': [
-            'blocksort.c',
-            'bzlib.c',
-            'bzlib.h',
-            'bzlib_private.h',
-            'compress.c',
-            'crctable.c',
-            'decompress.c',
-            'huffman.c',
-            'randtable.c',
-          ],
-          'direct_dependent_settings': {
-            'include_dirs': [
-              '.',
-            ],
-          },
-          'conditions': [
-            ['OS=="win"', {
-              'product_name': 'libbzip2',
-            }, {  # else: OS!="win"
-              'product_name': 'chrome_bz2',
-            }],
-          ],
-        },
-      ],
-    }, {
-      'targets': [
-        {
-          'target_name': 'bzip2',
-          'type': 'none',
-
-          'direct_dependent_settings': {
-            'defines': [
-              'USE_SYSTEM_LIBBZ2',
-            ],
-          },
-          'conditions': [
-            ['OS=="ios"', {
-              'link_settings': {
-                'libraries': [
-                  '$(SDKROOT)/usr/lib/libbz2.dylib',
-                ],
-              },
-            }, {
-              # There aren't any pkg-config files for libbz2
-              'link_settings': {
-                'libraries': [
-                  '-lbz2',
-                ],
-              },
-            }],
-          ],
-        },
-      ],
-    }],
-  ],
-}