diff --git a/gclient.py b/gclient.py
index a31491e89..5a40321f1 100755
--- a/gclient.py
+++ b/gclient.py
@@ -2050,11 +2050,6 @@ def CMDsync(parser, args):
                     help='Don\'t bootstrap from Google Storage.')
   parser.add_option('--ignore_locks', action='store_true',
                     help='GIT ONLY - Ignore cache locks.')
-  parser.add_option('--break_repo_locks', action='store_true',
-                    help='GIT ONLY - Forcibly remove repo locks (e.g. '
-                      'index.lock). This should only be used if you know for '
-                      'certain that this invocation of gclient is the only '
-                      'thing operating on the git repos (e.g. on a bot).')
   parser.add_option('--lock_timeout', type='int', default=5000,
                     help='GIT ONLY - Deadline (in seconds) to wait for git '
                          'cache lock to become available. Default is %default.')
diff --git a/gclient_scm.py b/gclient_scm.py
index 9a6f51234..1aeb69dbf 100644
--- a/gclient_scm.py
+++ b/gclient_scm.py
@@ -327,27 +327,6 @@ class GitWrapper(SCMWrapper):
           os.remove(disabled_hook_path)
         os.rename(os.path.join(hook_dir, f), disabled_hook_path)
 
-  def _maybe_break_locks(self, options):
-    """This removes all .lock files from this repo's .git directory, if the
-    user passed the --break_repo_locks command line flag.
-
-    In particular, this will cleanup index.lock files, as well as ref lock
-    files.
-    """
-    if options.break_repo_locks:
-      git_dir = os.path.join(self.checkout_path, '.git')
-      for path, _, filenames in os.walk(git_dir):
-        for filename in filenames:
-          if filename.endswith('.lock'):
-            to_break = os.path.join(path, filename)
-            self.Print('breaking lock: %s' % (to_break,))
-            try:
-              os.remove(to_break)
-            except OSError as ex:
-              self.Print('FAILED to break lock: %s: %s' % (to_break, ex))
-              raise
-
-
   def update(self, options, args, file_list):
     """Runs git to update or transparently checkout the working copy.
 
@@ -454,8 +433,6 @@ class GitWrapper(SCMWrapper):
       self.Print('________ unmanaged solution; skipping %s' % self.relpath)
       return self._Capture(['rev-parse', '--verify', 'HEAD'])
 
-    self._maybe_break_locks(options)
-
     if mirror:
       self._UpdateMirror(mirror, options)
 
diff --git a/tests/gclient_scm_test.py b/tests/gclient_scm_test.py
index 00592244c..d3fdc684f 100755
--- a/tests/gclient_scm_test.py
+++ b/tests/gclient_scm_test.py
@@ -133,7 +133,6 @@ class BaseGitWrapperTestCase(GCBaseTestCase, StdoutCheck, TestCaseUtils,
       self.cache_dir = None
       self.merge = False
       self.jobs = 1
-      self.break_repo_locks = False
       self.delete_unversioned_trees = False
 
   sample_git_import = """blob
@@ -502,36 +501,6 @@ class ManagedGitWrapperTestCase(BaseGitWrapperTestCase):
     sys.stdout.getvalue()
     sys.stdout.close()
 
-  def testUpdateLocked(self):
-    if not self.enabled:
-      return
-    options = self.Options()
-    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
-                                relpath=self.relpath)
-    file_path = join(self.base_path, '.git', 'index.lock')
-    with open(file_path, 'w'):
-      pass
-    with self.assertRaisesRegexp(subprocess2.CalledProcessError,
-                                 'Unable to create.*/index.lock'):
-      scm.update(options, (), [])
-    sys.stdout.close()
-
-  def testUpdateLockedBreak(self):
-    if not self.enabled:
-      return
-    options = self.Options()
-    options.break_repo_locks = True
-    scm = gclient_scm.CreateSCM(url=self.url, root_dir=self.root_dir,
-                                relpath=self.relpath)
-    file_path = join(self.base_path, '.git', 'index.lock')
-    with open(file_path, 'w'):
-      pass
-    scm.update(options, (), [])
-    self.assertRegexpMatches(sys.stdout.getvalue(),
-                             "breaking lock.*\.git/index\.lock")
-    self.assertFalse(os.path.exists(file_path))
-    sys.stdout.close()
-
   def testUpdateConflict(self):
     if not self.enabled:
       return
@@ -573,7 +542,6 @@ class ManagedGitWrapperTestCaseMox(BaseTestCase):
       self.force = force
       self.reset = False
       self.nohooks = False
-      self.break_repo_locks = False
       # TODO(maruel): Test --jobs > 1.
       self.jobs = 1