arc: Remove the base::MakeUnique presubmit

Now that base::MakeUnique is no more, we don't need this anymore.

Bug: 755727
Test: git cl upload
Change-Id: Ia90edbd28bbaca79afa5aa554677855e3b98cdfd
Reviewed-on: https://chromium-review.googlesource.com/944511Reviewed-by: Yusuke Sato <yusukes@chromium.org>
Commit-Queue: Luis Hector Chavez <lhchavez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540312}

components/arc/PRESUBMIT.py

@@ -2,27 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-_CPP_WHITE_LIST = (r'.+\.cc$', r'.+\.h$')
-
-
-def CheckMakeUnique(input_api, output_api):
-  """Encourage to use std::make_unique, instead of base::MakeUnique."""
-  errors = []
-  def SourceFilter(affected_file):
-    return input_api.FilterSourceFile(affected_file, _CPP_WHITE_LIST,
-                                      input_api.DEFAULT_BLACK_LIST)
-  for f in input_api.AffectedSourceFiles(SourceFilter):
-    for line_number, line in f.ChangedContents():
-      if input_api.re.search(r'\bbase::MakeUnique<', line):
-        errors.append(output_api.PresubmitError(
-            '%s:%d uses base::MakeUnique. Use std::make_unique instead.' %
-            (f.LocalPath(), line_number)))
-  return errors
-
 
 def CheckChangeOnUpload(input_api, output_api):
   results = []
   results += input_api.canned_checks.CheckChangeLintsClean(
       input_api, output_api)
-  results += CheckMakeUnique(input_api, output_api)
   return results