Remove old config values (#1503)

Author: alexrudd2

setup.cfg

@@ -76,7 +76,6 @@ include = pymodbus*
 
 # Add files or directories matching the regex patterns to the ignore-list.
 ignore-paths=
-    examples/v2.5.3,
     pymodbus/client/serial_asyncio,
     doc
 ignore-patterns=^\.#
@@ -540,13 +539,3 @@ omit =
 [codespell]
 skip=./doc/_build,./doc/source/_static,venv,.venv,.git,htmlcov,CHANGELOG.rst,.mypy_cache
 ignore-words-list = asend
-
-[isort]
-skip=doc/_build,venv,.venv,.git,pymodbus/client/serial_asyncio
-py_version=38
-profile=black
-line_length = 79
-lines_after_imports = 2
-known_local_folder =
-    common
-    contrib