git_cl: drop migration code

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."""
 
 import logging
@@ skipping 128 matching lines @@
 class Settings(object):
   def __init__(self):
     self.default_server = None
     self.cc = None
     self.root = None
     self.is_git_svn = None
     self.svn_branch = None
     self.tree_status_url = None
     self.viewvc_url = None
     self.updated = False
-    self.did_migrate_check = False
     self.is_gerrit = None
 
   def LazyUpdateIfNeeded(self):
     """Updates the settings from a codereview.settings file, if available."""
     if not self.updated:
       cr_settings_file = FindCodereviewSettingsFile()
       if cr_settings_file:
         LoadCodereviewSettingsFromFile(cr_settings_file)
       self.updated = True
 
@@ skipping 109 matching lines @@
     """Return true if this repo is assosiated with gerrit code review system."""
     if self.is_gerrit is None:
       self.is_gerrit = self._GetConfig('gerrit.host', error_ok=True)
     return self.is_gerrit
 
   def _GetConfig(self, param, **kwargs):
     self.LazyUpdateIfNeeded()
     return RunGit(['config', param], **kwargs).strip()
 
 
-def CheckForMigration():
-  """Migrate from the old issue format, if found.
-
-  We used to store the branch<->issue mapping in a file in .git, but it's
-  better to store it in the .git/config, since deleting a branch deletes that
-  branch's entry there.
-  """
-
-  # Don't run more than once.
-  if settings.did_migrate_check:
-    return
-
-  gitdir = RunGit(['rev-parse', '--git-dir']).strip()
-  storepath = os.path.join(gitdir, 'cl-mapping')
-  if os.path.exists(storepath):
-    print "old-style git-cl mapping file (%s) found; migrating." % storepath
-    store = open(storepath, 'r')
-    for line in store:
-      branch, issue = line.strip().split()
-      RunGit(['config', 'branch.%s.rietveldissue' % ShortBranchName(branch),
-              issue])
-    store.close()
-    os.remove(storepath)
-  settings.did_migrate_check = True
-
-
 def ShortBranchName(branch):
   """Convert a name like 'refs/heads/foo' to just 'foo'."""
   return branch.replace('refs/heads/', '')
 
 
 class Changelist(object):
   def __init__(self, branchref=None):
     # Poke settings so we get the "configure your server" message if necessary.
     global settings
     if not settings:
@@ skipping 99 matching lines @@
 
     Returns None if there is no remote.
     """
     remote = self.FetchUpstreamTuple()[0]
     if remote == '.':
       return None
     return RunGit(['config', 'remote.%s.url' % remote], error_ok=True).strip()
 
   def GetIssue(self):
     if not self.has_issue:
-      CheckForMigration()
       issue = RunGit(['config', self._IssueSetting()], error_ok=True).strip()
       if issue:
         self.issue = issue
         self.rietveld_server = gclient_utils.UpgradeToHttps(RunGit(
             ['config', self._RietveldServer()], error_ok=True).strip())
       else:
         self.issue = None
       if not self.rietveld_server:
         self.rietveld_server = settings.GetDefaultServerUrl()
       self.has_issue = True
@@ skipping 1063 matching lines @@
              'and retry or visit go/isgaeup.\n%s') % (e.code, str(e)))
 
   # Not a known command. Default to help.
   GenUsage(parser, 'help')
   return CMDhelp(parser, argv)
 
 
 if __name__ == '__main__':
   fix_encoding.fix_encoding()
   sys.exit(main(sys.argv[1:]))