Unbreak editors/py-neovim.

We had a missing dependency, but it turns out it's not needed anyway.

Raised with upstream.

OK sthen@, thanks.

editors/py-neovim/patches/patch-setup_py

@@ -0,0 +1,19 @@
+$OpenBSD: patch-setup_py,v 1.1 2019/11/21 12:29:52 edd Exp $
+
+pytest-runner isn't actually required:
+https://github.com/neovim/pynvim/issues/417
+
+Index: setup.py
+--- setup.py.orig
++++ setup.py
+@@ -8,9 +8,7 @@ install_requires = [
+     'msgpack>=0.5.0',
+ ]
+ 
+-setup_requires = [
+-    'pytest-runner'
+-]
++setup_requires = []
+ 
+ tests_require = [
+     'pytest>=3.4.0',

editors/py-neovim/patches/patch-test_conftest_py

@@ -1,4 +1,4 @@
-$OpenBSD: patch-test_conftest_py,v 1.2 2019/03/17 13:15:34 edd Exp $
+$OpenBSD: patch-test_conftest_py,v 1.3 2019/11/21 12:29:52 edd Exp $
 
 Although this file is present in the upstream source tree, it was not
 included when the release tarball was created.  This file is needed to
@@ -8,9 +8,9 @@ version.
 Index: test/conftest.py
 --- test/conftest.py.orig
 +++ test/conftest.py
-@@ -0,0 +1,67 @@
-+import json
-+import os
+@@ -1,5 +1,72 @@
+ import json
+ import os
 +import textwrap
 +
 +import pynvim
@@ -76,3 +76,8 @@ Index: test/conftest.py
 +        editor = pynvim.attach('socket', path=listen_address)
 +
 +    return editor
++import json
++import os
+ 
+ import pytest
+