[Android] Remove chromium version of devil.

build/android/devil/utils/host_utils.py

Index: build/android/devil/utils/host_utils.py
diff --git a/build/android/devil/utils/host_utils.py b/build/android/devil/utils/host_utils.py
deleted file mode 100644
index 580721f1275c5e19245c62676fb1ad114fc05aca..0000000000000000000000000000000000000000
--- a/build/android/devil/utils/host_utils.py
+++ /dev/null
@@ -1,16 +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.
-
-import os
-
-
-def GetRecursiveDiskUsage(path):
-  """Returns the disk usage in bytes of |path|. Similar to `du -sb |path|`."""
-  running_size = os.path.getsize(path)
-  if os.path.isdir(path):
-    for root, dirs, files in os.walk(path):
-      running_size += sum([os.path.getsize(os.path.join(root, f))
-                           for f in files + dirs])
-  return running_size
-