Add mb.py to pylint check of the root PRESUBMIT.py.

This now possible because of https://webrtc-review.googlesource.com/c/src/+/256972

Bug: webrtc:13605
Change-Id: Ie5c058c5ff459dde05c90f757a1df8bd53f35ccc
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/257281
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Christoffer Jansson <jansson@google.com>
Commit-Queue: Jeremy Leconte <jleconte@google.com>
Cr-Commit-Position: refs/heads/main@{#36390}

tools_webrtc/mb/PRESUBMIT.py

@@ -16,22 +16,6 @@ USE_PYTHON3 = True
 def _CommonChecks(input_api, output_api):
   results = []
 
-  # Run Pylint over the files in the directory.
-  pylint_checks = input_api.canned_checks.GetPylint(
-      input_api,
-      output_api,
-      version='2.7',
-      # Disabling certain python3-specific warnings until the conversion
-      # is complete.
-      disabled_warnings=[
-          'super-with-arguments',
-          'raise-missing-from',
-          'useless-object-inheritance',
-          'arguments-differ',
-      ],
-  )
-  results.extend(input_api.RunTests(pylint_checks))
-
   # Run the MB unittests.
   results.extend(
       input_api.canned_checks.RunUnitTestsInDirectory(input_api,