plymouth: remove patch causing issue with no login prompt

Setting `--retain-splash` isn't right, plymouth-quit gets used for instance
when switching to a getty or something that isn't graphical [1].

[1] https://gitlab.freedesktop.org/plymouth/plymouth/-/merge_requests/157

Signed-off-by: Piotr Łobacz <p.lobacz@welotec.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-core/plymouth/plymouth/0001-plymouth-Add-the-retain-splash-option.patch

@@ -1,35 +0,0 @@
-From f270f80d4c36a22a0f7b8de8fb6b1abef6f7b183 Mon Sep 17 00:00:00 2001
-From: Mingli Yu <mingli.yu@windriver.com>
-Date: Tue, 15 Feb 2022 16:23:10 +0800
-Subject: [PATCH] plymouth : Add the retain-splash option
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-Adding the "retain-splash” option to tell plymouth to keep the boot
-splash’s contents on screen even after plymouth exits to make the
-splash screen show more friendly on the system which boots so fast.
-
-Upstream-Status: Inappropriate [embedded specific]
-
-Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
----
- systemd-units/plymouth-quit.service.in | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/systemd-units/plymouth-quit.service.in b/systemd-units/plymouth-quit.service.in
-index ed9f9b9..147e9ee 100644
---- a/systemd-units/plymouth-quit.service.in
-+++ b/systemd-units/plymouth-quit.service.in
-@@ -3,7 +3,7 @@ Description=Terminate Plymouth Boot Screen
- After=rc-local.service plymouth-start.service systemd-user-sessions.service
- 
- [Service]
--ExecStart=-@PLYMOUTH_CLIENT_DIR@/plymouth quit
-+ExecStart=-@PLYMOUTH_CLIENT_DIR@/plymouth quit --retain-splash
- Type=oneshot
- RemainAfterExit=yes
- TimeoutSec=20
--- 
-2.17.1
-

meta-oe/recipes-core/plymouth/plymouth_24.004.60.bb

@@ -12,7 +12,6 @@ SRC_URI = " \
     http://www.freedesktop.org/software/plymouth/releases/${BPN}-${PV}.tar.xz \
     file://0001-Make-full-path-to-systemd-tty-ask-password-agent-con.patch \
     file://0001-plymouth-start-service-in-add-related-kernel-paramet.patch \
-    file://0001-plymouth-Add-the-retain-splash-option.patch \
     file://0001-Drop-libdl-references.patch \
     file://0001-Avoid-linking-to-plymouth_logo_file.patch \
     file://0001-Make-themes-build-optional.patch \