Remove all remaining obj_int_extract code

generate_gypi.sh

 #!/bin/bash -e
 #
 # 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.
 
 # This script is used to generate .gypi, .gni files and files in the
 # config/platform directories needed to build libvpx.
 # Every time libvpx source code is updated just run this script.
 #
@@ skipping 198 matching lines @@
 #      different compilation flags are required.
 function convert_srcs_to_project_files {
   # Do the following here:
   # 1. Filter .c, .h, .s, .S and .asm files.
   # 2. Move certain files to a separate include to allow applying different
   #    compiler options.
   # 3. Replace .asm.s to .asm because gyp will do the conversion.
 
   local source_list=$(grep -E '(\.c|\.h|\.S|\.s|\.asm)$' $1)
 
-  # _offsets are used in pre-processing to generate files for assembly. They are
-  # not part of the compiled library.
-  source_list=$(echo "$source_list" | grep -v '_offsets\.c')
-
   # Not sure why vpx_config is not included.
   source_list=$(echo "$source_list" | grep -v 'vpx_config\.c')
 
   # The actual ARM files end in .asm. We have rules to translate them to .S
   source_list=$(echo "$source_list" | sed s/\.asm\.s$/.asm/)
 
   # Select all x86 files ending with .c
   local intrinsic_list=$(echo "$source_list" | \
     egrep 'vp[89]/(encoder|decoder|common)/x86/'  | \
     egrep '(mmx|sse2|sse3|ssse3|sse4|avx|avx2).c$')
@@ skipping 289 matching lines @@
 make_clean
 make libvpx_srcs.txt target=libs $config > /dev/null
 convert_srcs_to_project_files libvpx_srcs.txt libvpx_srcs_generic
 
 echo "Remove temporary directory."
 cd $BASE_DIR
 rm -rf $TEMP_DIR
 
 # TODO(fgalligan): Is "--disable-fast-unaligned" needed on mipsel?
 # TODO(fgalligan): Can we turn on "--enable-realtime-only" for mipsel?