Remove unused V8 integration code in Sky

sky/engine/bindings/core/v8/generated.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.
-
-{
-  'variables': {
-    'bindings_core_v8_output_dir': '<(SHARED_INTERMEDIATE_DIR)/sky/bindings/core/v8',
-
-    'conditions': [
-      ['OS=="win" and buildtype=="Official"', {
-        # On Windows Official release builds, we try to preserve symbol
-        # space.
-        'bindings_core_v8_generated_aggregate_files': [
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings.cpp',
-        ],
-      }, {
-        'bindings_core_v8_generated_aggregate_files': [
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings01.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings02.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings03.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings04.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings05.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings06.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings07.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings08.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings09.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings10.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings11.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings12.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings13.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings14.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings15.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings16.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings17.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings18.cpp',
-          '<(bindings_core_v8_output_dir)/V8GeneratedCoreBindings19.cpp',
-        ],
-      }],
-    ],
-  },
-}