Android: follow up on crrev.com/250035, remove unused import.

build/android/pylib/gtest/test_package_exe.py

 # Copyright (c) 2012 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.
 
 """Defines TestPackageExecutable to help run stand-alone executables."""
 
 import logging
 import os
-import shutil
 import sys
 import tempfile
 
 from pylib import cmd_helper
 from pylib import constants
 from pylib import pexpect
 from pylib.gtest.test_package import TestPackage
 
 
 class TestPackageExecutable(TestPackage):
@@ skipping 113 matching lines @@
       if target_mtime < source_mtime:
         logging.critical(
             'stripped binary (%s, timestamp %d) older than '
             'source binary (%s, timestamp %d), build target %s',
             target_name, target_mtime, self.suite_path, source_mtime,
             self.suite_name + '_stripped')
         sys.exit(1)
 
     test_binary = constants.TEST_EXECUTABLE_DIR + '/' + self.suite_name
     adb.PushIfNeeded(target_name, test_binary)