test: let black handle line lengths

How can it be that telling everyone to use 80 means that black allows 88 and
then pylint and pycodestyle complain!?

pylintrc

@@ -6,7 +6,6 @@ load-plugins = pylint_pytest
 [MESSAGES CONTROL]
 enable =
 	blacklisted-name,
-	line-too-long,
 
 	syntax-error,
 	init-is-generator,
@@ -183,6 +182,7 @@ enable =
 	deprecated-pragma,
 disable =
 	invalid-name,
+	line-too-long,
 	file-ignored,
 	bad-indentation,
 	unused-wildcard-import,

setup.cfg

@@ -110,10 +110,10 @@ max-line-length = 80
 
 [pycodestyle]
 exclude = .git,.tox
-max-line-length = 80
 ; E203 = whitespace before ':'
+; E501 line too long
 ; W503 line break before binary operator
-ignore = E203,W503
+ignore = E203,E501,W503
 
 [pydocstyle]
 ; D105 = Missing docstring in magic method