Fix presubmit check to not enforce git-try to be parsed as python

PRESUBMIT.py

 # Copyright (c) 2011 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.
 
 """Top-level presubmit script for depot tools.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
 details on the presubmit API built into depot_tools.
 """
 
@@ skipping 14 matching lines @@
 
   results.extend(input_api.canned_checks.CheckOwners(input_api, output_api))
   black_list = list(input_api.DEFAULT_BLACK_LIST) + [
       r'^cpplint\.py$',
       r'^python_bin[\/\\].+',
       r'^svn_bin[\/\\].+',
       r'^tests[\/\\]\w+?[\/\\].+']
   results.extend(input_api.canned_checks.RunPylint(
       input_api,
       output_api,
-      white_list=[r'.*\.py$', r'^git-try$'],
+      white_list=[r'.*\.py$'],
       black_list=black_list))
 
   # TODO(maruel): Make sure at least one file is modified first.
   # TODO(maruel): If only tests are modified, only run them.
   results.extend(input_api.canned_checks.RunUnitTestsInDirectory(
       input_api,
       output_api,
       'tests',
       whitelist=[r'.*test\.py$']))
   results.extend(RunGitClTests(input_api, output_api))
@@ skipping 52 matching lines @@
   return CommonChecks(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   output = []
   output.extend(CommonChecks(input_api, output_api))
   output.extend(input_api.canned_checks.CheckDoNotSubmit(
       input_api,
       output_api))
   return output