Remove references to svn version control.

setup_links.py

 #!/usr/bin/env python
 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 """Setup links to a Chromium checkout for WebRTC.
@@ skipping 174 matching lines @@
 
   def announce(self, planning):
     if planning:
       logging.warn('Planning to remove directory: %s', self._path)
     else:
       logging.warn('Removing directory: %s', self._path)
 
   def doit(self, _):
     if sys.platform.startswith('win'):
       # shutil.rmtree() doesn't work on Windows if any of the directories are
-      # read-only, which svn repositories are.
+      # read-only.
       subprocess.check_call(['rd', '/q', '/s', self._path], shell=True)
     else:
       shutil.rmtree(self._path)
 
 
 class Makedirs(Action):
   def __init__(self, path):
     super(Makedirs, self).__init__(dangerous=False)
     self._priority = 1
     self._path = path
@@ skipping 296 matching lines @@
   except LinkError as e:
     print >> sys.stderr, e.message
     return 3
   finally:
     links_database.close()
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())