Remove all remaining obj_int_extract code

obj_int_extract.gypi

-# Copyright 2014 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.
-
-# Rule to extract integer values for each symbol from an object file.
-# The output file name is the input file name with extension replaced with
-# asm or h.
-# The following gyp variables must be set before including this gypi:
-#   output_format, the output format of integer value.
-#   output_dir, the full path where the output file should be created.
-#
-# For example:
-#
-# 'sources': ['a.o', 'b.o'],
-# 'variables': {
-#   'output_format': 'cheader',
-#   'output_dir': 'output',
-# },
-# 'includes': ['obj_int_extract.gypi'],
-#
-# This extracts the symbol from a.o and b.o, and outputs them to a.h and b.h
-# in output directory.
-{
-  'variables': {
-    'conditions': [
-      ['os_posix==1', {
-        'asm_obj_extension': 'o',
-      }],
-      ['OS=="win"', {
-        'asm_obj_extension': 'obj',
-      }],
-      ['output_format=="cheader"', {
-        'output_extension': 'h',
-      }, {
-        'output_extension': 'asm',
-      }],
-    ],
-  },
-  'rules': [
-    {
-      'rule_name': 'obj_int_extract',
-      'extension': '<(asm_obj_extension)',
-      'inputs': [
-        '<(PRODUCT_DIR)/libvpx_obj_int_extract',
-        'obj_int_extract.py',
-      ],
-      'outputs': [
-        '<(output_dir)/<(RULE_INPUT_ROOT).<(output_extension)',
-      ],
-      'action': [
-        'python',
-        '<(DEPTH)/third_party/libvpx/obj_int_extract.py',
-        '-e', '<(PRODUCT_DIR)/libvpx_obj_int_extract',
-        '-f', '<(output_format)',
-        '-b', '<(RULE_INPUT_PATH)',
-        '-o', '<(output_dir)/<(RULE_INPUT_ROOT).<(output_extension)',
-      ],
-      'message': 'Generate assembly offsets <(RULE_INPUT_PATH)',
-    },
-  ],
-}