Remove checked-in .isolate files.

build/android/android.isolate

-# Copyright 2015 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': {
-    'files': [
-      '../../build/util/lib/common/',
-      '../../third_party/android_tools/sdk/build-tools/',
-      '../../third_party/android_tools/sdk/platform-tools/',
-      '../../third_party/catapult/',
-      '../../third_party/requests/',
-      '../../tools/swarming_client/',
-      '<(PRODUCT_DIR)/icudtl.dat',
-      '<(PRODUCT_DIR)/lib.java/chromium_commands.dex.jar',
-      '<(PRODUCT_DIR)/host_forwarder',
-      '<(PRODUCT_DIR)/forwarder_dist/',
-      '<(PRODUCT_DIR)/md5sum_bin_host',
-      '<(PRODUCT_DIR)/md5sum_dist/',
-      'devil_chromium.json',
-      'devil_chromium.py',
-      'gyp/util/',
-      'incremental_install/',
-      'lighttpd_server.py',
-      'pylib/',
-      'test_runner.py',
-    ]
-  }
-}