systemd: remove patch that makes systemd-logind ignore KEY_POWER events

Without systemd, our KEY_POWER events were handled by the ACPI daemon, which in
turn issued a "poweroff" command. With systemd, the ACPI daemon is no longer
available and the events are handled by systemd-logind instead, which also
powers down the system properly. However, NXP added a patch that prevents
system-logind from handling the events, since they use the sc_powerkey instead.

Remove this patch to be able to power the target off via our power button.

https://jira.digi.com/browse/DEL-6415

Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>

meta-digi-dey/recipes-core/systemd/systemd/0020-logind.conf-Set-HandlePowerKey-to-ignore.patch

@@ -1,30 +0,0 @@
-From ef9f6626d08d6d19767d20845c8d6f374f05465d Mon Sep 17 00:00:00 2001
-From: Tom Hochstein <tom.hochstein@nxp.com>
-Date: Tue, 3 Apr 2018 14:07:32 -0500
-Subject: [PATCH] logind.conf: Set HandlePowerKey to ignore
-
-For i.MX, we don't want systemd to handle the power key.
-
-Upstream-Status: Inappropriate [i.MX-specific]
-
-Signed-off-by: Tom Hochstein <tom.hochstein@nxp.com>
----
- src/login/logind.conf.in | 2 ++
- 1 file changed, 2 insertions(+)
-
-diff --git a/src/login/logind.conf.in b/src/login/logind.conf.in
-index 6f720b7..043191f 100644
---- a/src/login/logind.conf.in
-+++ b/src/login/logind.conf.in
-@@ -19,6 +19,8 @@
- #KillExcludeUsers=root
- #InhibitDelayMaxSec=5
- #HandlePowerKey=poweroff
-+# i.MX-specific
-+HandlePowerKey=ignore
- #HandleSuspendKey=suspend
- #HandleHibernateKey=hibernate
- #HandleLidSwitch=suspend
--- 
-2.7.4
-

meta-digi-dey/recipes-core/systemd/systemd_%.bbappend

@@ -1,7 +1,6 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
 
-SRC_URI += "file://0020-logind.conf-Set-HandlePowerKey-to-ignore.patch \
-            file://0021-systemd-udevd.service.in-Set-MountFlags-as-shared-to.patch \
+SRC_URI += "file://0021-systemd-udevd.service.in-Set-MountFlags-as-shared-to.patch \
             file://0001-socket-util-fix-getpeergroups-assert-fd-8080.patch \
 "