Allow git_cl to be called when no default server is given

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 1479 matching lines @@
 
     self.mock(git_cl, 'Changelist', ChangelistMock)
     ChangelistMock.desc = 'foo\n'
 
     self.assertEqual(0, git_cl.main(['description', '-d']))
     self.assertEqual('foo\n', out.getvalue())
 
   def test_description_rietveld(self):
     out = StringIO.StringIO()
     self.mock(git_cl.sys, 'stdout', out)
-    self.mock(git_cl.Changelist, 'GetDescription',
-              lambda *args: 'foobar')
+    self.mock(git_cl.Changelist, 'GetDescription', lambda *args: 'foobar')
 
-    self.calls = [
-        ((['git', 'config', 'rietveld.autoupdate'],), ''),
-        ((['git', 'config', 'rietveld.server'],), ''),
-        ((['git', 'config', 'rietveld.server'],), ''),
-    ]
     self.assertEqual(0, git_cl.main([
         'description', 'https://code.review.org/123123', '-d', '--rietveld']))
     self.assertEqual('foobar\n', out.getvalue())
 
   def test_description_gerrit(self):
     out = StringIO.StringIO()
     self.mock(git_cl.sys, 'stdout', out)
-    self.mock(git_cl.Changelist, 'GetDescription',
-              lambda *args: 'foobar')
+    self.mock(git_cl.Changelist, 'GetDescription', lambda *args: 'foobar')
 
     self.assertEqual(0, git_cl.main([
         'description', 'https://code.review.org/123123', '-d', '--gerrit']))
     self.assertEqual('foobar\n', out.getvalue())
 
   def test_description_set_raw(self):
     out = StringIO.StringIO()
     self.mock(git_cl.sys, 'stdout', out)
 
     self.mock(git_cl, 'Changelist', ChangelistMock)
@@ skipping 168 matching lines @@
         ((['rm_file_or_tree', '/abs/git_repo_root/.git/hooks/commit-msg'],),
          ''),
     ]
     cl._codereview_impl._GerritCommitMsgHookCheck(offer_removal=True)
 
 
 if __name__ == '__main__':
   git_cl.logging.basicConfig(
       level=git_cl.logging.DEBUG if '-v' in sys.argv else git_cl.logging.ERROR)
   unittest.main()