systemd: remove upstreamed patch

The addition of missing.h to user-utils.c was done in v230 with 0b6b45d5.

(From OE-Core rev: b9e5a58f64e45be37b9532b20bf22d91257abbd6)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd/0021-include-missing.h-for-getting-secure_getenv-definiti.patch

@@ -1,27 +0,0 @@
-From 6cedbaee7964f6a6c61b9f2c8f0b87cef9370424 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Tue, 15 Dec 2015 22:51:55 +0000
-Subject: [PATCH 26/38] include missing.h for getting secure_getenv definition
-
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
-Upstream-Status: Pending
-
- src/basic/user-util.c | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/src/basic/user-util.c b/src/basic/user-util.c
-index 55672b3..22c4a23 100644
---- a/src/basic/user-util.c
-+++ b/src/basic/user-util.c
-@@ -38,6 +38,7 @@
- #include "path-util.h"
- #include "string-util.h"
- #include "user-util.h"
-+#include "missing.h"
- 
- bool uid_is_valid(uid_t uid) {
- 
--- 
-1.8.3.1
-

meta/recipes-core/systemd/systemd_230.bb

@@ -33,7 +33,6 @@ SRC_URI += " \
            file://0018-make-test-dir-configurable.patch \
            file://0019-remove-duplicate-include-uchar.h.patch \
            file://0020-check-for-uchar.h-in-configure.patch \
-           file://0021-include-missing.h-for-getting-secure_getenv-definiti.patch \
            file://0022-socket-util-don-t-fail-if-libc-doesn-t-support-IDN.patch \
            file://udev-re-enable-mount-propagation-for-udevd.patch \
            file://CVE-2016-7795.patch \