python3-grpcio: use system re2

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-Include-missing-cstdint-header.patch

@@ -1,29 +0,0 @@
-From 0760579b4890b48ea3ab36e48f1f6fb3e7ed05f5 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Mon, 30 Jan 2023 10:31:10 -0800
-Subject: [PATCH] Include missing <cstdint> header
-
-gcc 13 moved some includes around and as a result <cstdint> is
-no longer transitively included [1]. Explicitly include it for
-int32_t.
-
-[1] https://gcc.gnu.org/gcc-13/porting_to.html#header-dep-changes
-
-Upstream-Status: Submitted [https://code-review.googlesource.com/c/re2/+/60970]
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- third_party/re2/util/pcre.h | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/third_party/re2/util/pcre.h b/third_party/re2/util/pcre.h
-index 896b0bd..271a005 100644
---- a/third_party/re2/util/pcre.h
-+++ b/third_party/re2/util/pcre.h
-@@ -163,6 +163,7 @@
- 
- #include "util/util.h"
- #include "re2/stringpiece.h"
-+#include <cstdint>
- 
- #ifdef USEPCRE
- #include <pcre.h>