py-grpcio: also remove unused patch

net/py-grpcio/patches/patch-src_python_grpcio_commands.py

@@ -1,15 +0,0 @@
-$NetBSD: patch-src_python_grpcio_commands.py,v 1.2 2019/03/28 17:35:14 leot Exp $
-
-Use dependencies in pkgsrc.
-
---- src/python/grpcio/commands.py.orig	2019-02-26 17:31:26.000000000 +0000
-+++ src/python/grpcio/commands.py
-@@ -218,7 +218,7 @@ class BuildExt(build_ext.build_ext):
-         #   all C or all C++ compilation, the mix of C and C++ will crash.
-         #   *By default*, the macOS use clang and Linux use gcc, that's why
-         #   the special condition here is checking platform.
--        if "darwin" in sys.platform:
-+        if False and "darwin" in sys.platform:
-             config = os.environ.get('CONFIG', 'opt')
-             target_path = os.path.abspath(
-                 os.path.join(