improve linter configuration

- add to disable list the import-error. without virtual env this error is
  useless
- add flake8 max-line-length. maybe someone is using flake8 to, then it helps
- remove the python configuration from .editorconfig. not more necessary because
  of black

.editorconfig

@@ -7,15 +7,6 @@ insert_final_newline = true
 trim_trailing_whitespace = true
 charset = utf-8
 
-# Python files
-[*.py]
-indent_size = 4
-# isort plugin configuration
-known_first_party = flask_celeryext
-known_third_party = celery, flask
-multi_line_output = 2
-default_section = THIRDPARTY
-
 # RST files (used by sphinx)
 [*.rst]
 indent_size = 4

setup.cfg

@@ -60,11 +60,14 @@ universal = 1
 [pydocstyle]
 add_ignore = D401,D403
 
+[flake8]
+max-line-length = 88
+
 [pylint]
 max-line-length = 88
 
 [pylint.messages_control]
-disable = too-few-public-methods, abstract-method
+disable = import-error, too-few-public-methods, abstract-method
 
 [tool:isort]
 profile=black