patchtest: mbox.py: new data implementation

Consolidate and improve some objects:

- absorb utils.py functionality
- repo.py: use mbox.py
- repo.py: remove some cruft
- utils.py: replace with logs.py
- utils.py: delete
- patch.py: delete
- scripts/patchtest: use logging directly
- general cleanup

(From OE-Core rev: d4fbdb1d15f281b236137d63710c73bca8911a36)

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/patchtest

@@ -9,12 +9,12 @@
 # SPDX-License-Identifier: GPL-2.0-only
 #
 
-import sys
-import os
-import unittest
-import logging
-import traceback
 import json
+import logging
+import os
+import sys
+import traceback
+import unittest
 
 # Include current path so test cases can see it
 sys.path.insert(0, os.path.dirname(os.path.realpath(__file__)))
@@ -25,13 +25,14 @@ sys.path.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), '..
 from data import PatchTestInput
 from repo import PatchTestRepo
 
-import utils
-logger = utils.logger_create('patchtest')
+logger = logging.getLogger("patchtest")
+loggerhandler = logging.StreamHandler()
+loggerhandler.setFormatter(logging.Formatter("%(message)s"))
+logger.addHandler(loggerhandler)
+logger.setLevel(logging.INFO)
 info = logger.info
 error = logger.error
 
-import repo
-
 def getResult(patch, mergepatch, logfile=None):
 
     class PatchTestResult(unittest.TextTestResult):