[Release] Remove usage of roll ref

tools/release/test_mergeinfo.py

 #!/usr/bin/env python
 # Copyright 2015 the V8 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.
 
 import mergeinfo
 import shutil
 import unittest
 
 from collections import namedtuple
@@ skipping 133 matching lines @@
     hash_of_followup = self._make_empty_commit(message)
 
     merges = mergeinfo.get_merge_commits(self.base_dir, hash_of_first_commit)
     # Check if follow up is ignored
     self.assertTrue(hash_of_followup not in merges)
 
     # Check for proper return of merges
     self.assertTrue(hash_of_hit in merges)
     self.assertTrue(hash_of_ignored not in merges)
 
-  def testIsRolling(self):
-    commits = self._get_commits()
-    hash_of_first_commit = commits[0]
-    self._make_empty_commit('This one is the roll head')
-    self._execute_git(['branch', 'remotes/origin/roll'])
-    hash_of_not_rolled = self._make_empty_commit('This one is not yet rolled')
-
-    self.assertTrue(mergeinfo.is_rolling(
-      self.base_dir, hash_of_first_commit))
-    self.assertFalse(mergeinfo.is_rolling(
-      self.base_dir, hash_of_not_rolled))
-
   def testIsLkgr(self):
     commits = self._get_commits()
     hash_of_first_commit = commits[0]
     self._make_empty_commit('This one is the lkgr head')
     self._execute_git(['branch', 'remotes/origin/lkgr'])
     hash_of_not_lkgr = self._make_empty_commit('This one is not yet lkgr')
 
     self.assertTrue(mergeinfo.is_lkgr(
       self.base_dir, hash_of_first_commit))
     self.assertFalse(mergeinfo.is_lkgr(
       self.base_dir, hash_of_not_lkgr))
 
   def testShowFirstCanary(self):
     commits = self._get_commits()
     hash_of_first_commit = commits[0]
 
     self.assertEqual(mergeinfo.get_first_canary(
       self.base_dir, hash_of_first_commit), 'No Canary coverage')
 
     self._execute_git(['branch', 'remotes/origin/chromium/2345'])
     self._execute_git(['branch', 'remotes/origin/chromium/2346'])
 
     self.assertEqual(mergeinfo.get_first_canary(
       self.base_dir, hash_of_first_commit), '2345')
 
 if __name__ == "__main__":
    unittest.main()