configs/qemu_ppc_mpc8544ds_defconfig: remove kernel patch

The ppc-mpc8544ds is the only qemu configuration that requires a kernel patch:
board/qemu/ppc-mpc8544ds/patches/linux/0001-powerpc-Fix-mcpu-options-for-SPE-only-compiler.patch

But this patch doesn't apply after a backport between v6.1.20 and v6.1.21

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=da0beae2449376326086e9f57468fd2b64736d2a

So the patch 0001-powerpc-Fix-mcpu-options-for-SPE-only-compiler.patch doesn't
seem required anymore.

 Welcome to Buildroot
 buildroot login: root
 # uname -a
 Linux buildroot 6.1.28 #1 Wed May 24 09:08:27 UTC 2023 ppc GNU/Linux
 # cat /proc/cpuinfo
 processor	: 0
 cpu		: e500v2
 clock		: 400.000000MHz
 revision	: 3.0 (pvr 8021 0030)
 bogomips	: 800.00

 timebase	: 400000000
 platform	: MPC8544 DS
 model		: MPC8544DS
 Memory		: 128 MB

Fixes:
https://gitlab.com/buildroot.org/buildroot/-/jobs/4306895282
https://bugs.busybox.net/show_bug.cgi?id=15581

Signed-off-by: Romain Naour <[email protected]>
Cc: Jan-Benedict Glaw <[email protected]>
Cc: Sebastian Weyer <[email protected]>
Signed-off-by: Yann E. MORIN <[email protected]>

.checkpackageignore

@@ -74,7 +74,6 @@ board/pine64/rockpro64/post-build.sh Shellcheck
 board/qemu/aarch64-sbsa/assemble-flash-images Shellcheck
 board/qemu/microblazebe-mmu/0001-net-xilinx-xemaclite-add-2.00.b-revision.patch Upstream
 board/qemu/microblazeel-mmu/0001-net-xilinx-xemaclite-add-2.00.b-revision.patch Upstream
-board/qemu/ppc-mpc8544ds/patches/linux/0001-powerpc-Fix-mcpu-options-for-SPE-only-compiler.patch Upstream
 board/qemu/x86/post-build.sh Shellcheck
 board/qemu/x86_64/post-build.sh Shellcheck
 board/qmtech/zynq/patches/linux/0001-DTS-for-QMTech-Zynq-starter-kit.patch Upstream

configs/qemu_ppc_mpc8544ds_defconfig

@@ -3,7 +3,6 @@ BR2_powerpc=y
 BR2_powerpc_8548=y
 
 # System
-BR2_GLOBAL_PATCH_DIR="board/qemu/ppc-mpc8544ds/patches"
 BR2_SYSTEM_DHCP="eth0"
 
 # Filesystem