patchtest: simplify, rename modules

- simplify base.py, data.py
- move some leftover regex patterns to patterns.py
- remove pyparsing path logic, since this is no longer needed
- rename PatchTestInput class to PatchtestParser
- data.py: rename to patchtest_parser.py
- patterns.py: rename to patchtest_patterns.py
- move PatchTestDataStore to test_metadata.py since that's the only
  place it's used
- remove unused logger code

(From OE-Core rev: 1e971b05b036b0b1eb0bdbd9b26b54d06e74294c)

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

meta/lib/patchtest/tests/test_python_pylint.py

@@ -5,9 +5,8 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
 import base
-import patterns
 from io import StringIO
-from data import PatchTestInput
+from patchtest_parser import PatchtestParser
 from pylint.reporters.text import TextReporter
 import pylint.lint as lint