[Android] Remove chromium version of devil.

build/android/devil/android/valgrind_tools/__init__.py

Index: build/android/devil/android/valgrind_tools/__init__.py
diff --git a/build/android/devil/android/valgrind_tools/__init__.py b/build/android/devil/android/valgrind_tools/__init__.py
deleted file mode 100644
index 0182d4c17644e2f017c67fec8a10b498fc2049c2..0000000000000000000000000000000000000000
--- a/build/android/devil/android/valgrind_tools/__init__.py
+++ /dev/null
@@ -1,21 +0,0 @@
-# Copyright (c) 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.
-"""
-Classes in this package define additional actions that need to be taken to run a
-test under some kind of runtime error detection tool.
-
-The interface is intended to be used as follows.
-
-1. For tests that simply run a native process (i.e. no activity is spawned):
-
-Call tool.CopyFiles(device).
-Prepend test command line with tool.GetTestWrapper().
-
-2. For tests that spawn an activity:
-
-Call tool.CopyFiles(device).
-Call tool.SetupEnvironment().
-Run the test as usual.
-Call tool.CleanUpEnvironment().
-"""