python.pkgs.flake8: remove no longer used patch

pkgs/development/python-modules/flake8/move-pytest-config-to-pytest-ini.patch

@@ -1,22 +0,0 @@
-diff -r ad8325924f04 pytest.ini
---- /dev/null	Thu Jan 01 00:00:00 1970 +0000
-+++ b/pytest.ini	Fri Sep 30 12:28:39 2016 +0200
-@@ -0,0 +1,4 @@
-+[pytest]
-+-norecursedirs = .git .* *.egg* old docs dist build
-+-addopts = -rwv
-+
-diff -r ad8325924f04 setup.cfg
---- a/setup.cfg	Fri Sep 30 09:22:39 2016 +0200
-+++ b/setup.cfg	Fri Sep 30 12:28:39 2016 +0200
-@@ -12,10 +12,6 @@
- 	pycodestyle >= 2.0.0, < 2.1.0
- 	mccabe >= 0.5.0, < 0.6.0
- 
--[pytest]
--norecursedirs = .git .* *.egg* old docs dist build
--addopts = -rw
--
- [egg_info]
- tag_build = 
- tag_date = 0