Remove checked-in .isolate files.

gin/v8.isolate

Index: gin/v8.isolate
diff --git a/gin/v8.isolate b/gin/v8.isolate
deleted file mode 100644
index a47dd9ea6efd728247ad9ad99e8cda89c6cb2dfd..0000000000000000000000000000000000000000
--- a/gin/v8.isolate
+++ /dev/null
@@ -1,15 +0,0 @@
-# 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.
-{
-  'conditions': [
-    ['v8_use_external_startup_data==1', {
-      'variables': {
-        'files': [
-          '<(PRODUCT_DIR)/natives_blob.bin',
-          '<(PRODUCT_DIR)/snapshot_blob.bin',
-        ],
-      },
-    }],
-  ],
-}