Remove stale references to the blink_presubmit bot.

PRESUBMIT_test.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.
 
 import re
 import subprocess
 import unittest
 
 import PRESUBMIT
@@ skipping 720 matching lines @@
             'android_dbg_recipe',
             'android_dbg_triggered_tests',
             'android_dbg_triggered_tests_recipe',
             'android_fyi_dbg',
             'android_fyi_dbg_triggered_tests',
             'android_rel',
             'android_rel_triggered_tests',
             'android_x86_dbg',
             'blink_android_compile_dbg',
             'blink_android_compile_rel',
-            'blink_presubmit',
             'chromium_presubmit',
             'linux_arm_cross_compile',
             'linux_arm_tester',
             'linux_chromeos_asan',
             'linux_chromeos_browser_asan',
             'linux_chromeos_valgrind',
             'linux_chromium_chromeos_dbg',
             'linux_chromium_chromeos_rel',
             'linux_chromium_compile_dbg',
             'linux_chromium_compile_rel',
@@ skipping 326 matching lines @@
                ['char* host = "https://www.aol.com"; // google.com'])
     ]
 
     warnings = PRESUBMIT._CheckHardcodedGoogleHostsInLowerLayers(
       input_api, MockOutputApi())
     self.assertEqual(0, len(warnings))
 
 
 if __name__ == '__main__':
   unittest.main()