Remove ignored bot_update "force" parameter.

scripts/slave/recipes/devtools.py

 # Copyright 2016 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.
 
 from recipe_engine.types import freeze
 
 DEPS = [
   'chromium_checkout',
   'depot_tools/bot_update',
   'depot_tools/gclient',
@@ skipping 20 matching lines @@
 
 def should_skip_checks(api):
   if not api.tryserver.is_tryserver:
     return False
   return all(
       not filename.startswith(AFFECTED_PATHS)
       for filename in api.chromium_checkout.get_files_affected_by_patch())
 
 def RunSteps(api):
   api.gclient.set_config('chromium')
-  api.bot_update.ensure_checkout(force=True)
+  api.bot_update.ensure_checkout()
 
   if should_skip_checks(api):
     api.step('skip checks', ['echo', 'no devtools file in patch'])
     return
 
   def get_devtools_path(*sub_paths):
     devtools_sub_path = ('third_party', 'WebKit', 'Source', 'devtools')
     joined_path = devtools_sub_path + sub_paths
     return api.path['checkout'].join(*joined_path)
 
@@ skipping 42 matching lines @@
     )
     yield (
       api.test(config['testname']  + '_tryserver_with_devtools') +
       tryserver_properties(api, mastername, config) +
       api.override_step_data(
         'git diff to analyze patch',
         api.raw_io.stream_output(
           'third_party/WebKit/Source/devtools/fake.js\n')
       )
     )