python3-grpcio: use system zlib

This also allows to remove a custom patch to maintain and corrects
license, SPDX and CVE handling.

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-python/recipes-devtools/python/python3-grpcio/0001-zlib-Include-unistd.h-for-open-close-C-APIs.patch

@@ -1,24 +0,0 @@
-From f84421d8ee06890e2c98c0f7c9ec6c73f88e77c3 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Sun, 12 Feb 2023 21:25:04 -0800
-Subject: [PATCH] zlib: Include unistd.h for open/close C APIs
-
-Upstream-Status: Pending
-
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- third_party/zlib/gzguts.h | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/third_party/zlib/gzguts.h b/third_party/zlib/gzguts.h
-index f937504..341a68d 100644
---- a/third_party/zlib/gzguts.h
-+++ b/third_party/zlib/gzguts.h
-@@ -18,6 +18,7 @@
- #endif
- 
- #include <stdio.h>
-+#include <unistd.h>
- #include "zlib.h"
- #ifdef STDC
- #  include <string.h>