git cl upload: remove no longer aplicable message.

git_cl.py

 #!/usr/bin/env python
 # 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.
 
 # Copyright (C) 2008 Evan Martin <martine@danga.com>
 
 """A git-command for integrating reviews on Rietveld and Gerrit."""
 
 from __future__ import print_function
@@ skipping 2465 matching lines @@
         # squashed version.
         upstream_branch_name = scm.GIT.ShortBranchName(upstream_branch)
         # Check the squashed hash of the parent.
         parent = RunGit(['config',
                          'branch.%s.gerritsquashhash' % upstream_branch_name],
                         error_ok=True).strip()
         # Verify that the upstream branch has been uploaded too, otherwise
         # Gerrit will create additional CLs when uploading.
         if not parent or (RunGitSilent(['rev-parse', upstream_branch + ':']) !=
                           RunGitSilent(['rev-parse', parent + ':'])):
-          # TODO(tandrii): remove "old depot_tools" part on April 12, 2016.
           DieWithError(
               'Upload upstream branch %s first.\n'
-              'Note: maybe you\'ve uploaded it with --no-squash or with an old '
-              'version of depot_tools. If so, then re-upload it with:\n'
+              'Note: maybe you\'ve uploaded it with --no-squash. '
+              'If so, then re-upload it with:\n'
               '    git cl upload --squash\n' % upstream_branch_name)
       else:
         parent = self.GetCommonAncestorWithUpstream()
 
       tree = RunGit(['rev-parse', 'HEAD:']).strip()
       ref_to_push = RunGit(['commit-tree', tree, '-p', parent,
                             '-m', message]).strip()
     else:
       change_desc = ChangeDescription(
           options.message or CreateDescriptionFromLog(args))
@@ skipping 2605 matching lines @@
 if __name__ == '__main__':
   # These affect sys.stdout so do it outside of main() to simplify mocks in
   # unit testing.
   fix_encoding.fix_encoding()
   setup_color.init()
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)