Remove confirmation from git cl land.

tests/git_cl_test.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.
 
 """Unit tests for git_cl.py."""
 
 import os
 import StringIO
 import stat
@@ skipping 318 matching lines @@
 
   @classmethod
   def _dcommit_calls_3(cls):
     return [
       ((['git',
          'diff', '--no-ext-diff', '--stat', '--find-copies-harder',
          '-l100000', '-C50', 'fake_ancestor_sha',
          'refs/heads/working'],),
        (' PRESUBMIT.py |    2 +-\n'
         ' 1 files changed, 1 insertions(+), 1 deletions(-)\n')),
-      (('About to commit; enter to confirm.',), None),
       ((['git', 'show-ref', '--quiet', '--verify',
          'refs/heads/git-cl-commit'],),
        (('', None), 0)),
       ((['git', 'branch', '-D', 'git-cl-commit'],), ''),
       ((['git', 'show-ref', '--quiet', '--verify',
          'refs/heads/git-cl-cherry-pick'],), ''),
       ((['git', 'rev-parse', '--show-cdup'],), '\n'),
       ((['git', 'checkout', '-q', '-b', 'git-cl-commit'],), ''),
       ((['git', 'reset', '--soft', 'fake_ancestor_sha'],), ''),
       ((['git', 'commit', '-m',
@@ skipping 512 matching lines @@
   def AffectedFiles(self):
     return []
 
   def LocalPaths(self):
     return None
 
 if __name__ == '__main__':
   git_cl.logging.basicConfig(
       level=git_cl.logging.DEBUG if '-v' in sys.argv else git_cl.logging.ERROR)
   unittest.main()