Removes files from //build that we don't need

build/android/pylib/base/environment.py

-# 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.
-
-
-class Environment(object):
-  """An environment in which tests can be run.
-
-  This is expected to handle all logic that is applicable to an entire specific
-  environment but is independent of the test type.
-
-  Examples include:
-    - The local device environment, for running tests on devices attached to
-      the local machine.
-    - The local machine environment, for running tests directly on the local
-      machine.
-  """
-
-  def __init__(self):
-    pass
-
-  def SetUp(self):
-    raise NotImplementedError
-
-  def TearDown(self):
-    raise NotImplementedError
-
-  def __enter__(self):
-    self.SetUp()
-    return self
-
-  def __exit__(self, _exc_type, _exc_val, _exc_tb):
-    self.TearDown()
-