[PATCH v2] arm64: defconfig: drop four symbols that no longer exist

[TAKANO Mitsuhiro <takano32@gmail.com>]

None of these symbols exists any more; the lines are left over from the
removal of the options they name:

  NFS_V4_1                  folded into NFS_V4 (7537db24806f)
  SLIM_QCOM_CTRL            driver removed     (7cbba32a2d62)
  NET_VENDOR_PACKET_ENGINES vendor removed     (aec3202247b4)
  SCHED_DEBUG               option removed     (b52173065e0a)

The Ethernet line was added by commit 32379ad4060b ("arm64: defconfig:
Drop unused Ethernet vendors") a week after the packetengines vendor
directory had been removed, so it was stale from the start.

The built configuration does not change.

Link: https://lore.kernel.org/all/20251223134807.3543642-1-mikko.rapeli@linaro.org/
Link: https://lore.kernel.org/all/20260317-arm_defconf_cleanup-v1-3-8eecb7fdd24d@kernel.org/
Link: https://lore.kernel.org/all/20260317-arm_defconf_cleanup-v1-9-8eecb7fdd24d@kernel.org/
Signed-off-by: TAKANO Mitsuhiro <takano32@gmail.com>
---
v2: the commit message now carries only the change itself.  The test
    record, the earlier submissions and the AI disclosure moved below
    this line, as Krzysztof asked.

Tested as configuration text only: "make ARCH=arm64 defconfig" on
v7.4-rc2 with and without this change gives a byte-identical .config,
and "make savedefconfig" emits none of the four lines.  No kernel was
built or booted from this change.

Scanning every Kconfig definition in the tree leaves no other stale
line in this file; similar leftovers remain in other architectures'
defconfigs and are left for separate patches.

Mikko Rapeli sent a patch for the SLIM_QCOM_CTRL line in December
2025, and Vincent Mailhol's "configs: cleanup obsolete or incorrect
assignments" series carried the NFS_V4_1 and SLIM_QCOM_CTRL lines in
March 2026; both are still unmerged.  I am happy to drop the
corresponding hunk if either author would rather keep their own.

The change and the changelog text were produced with an AI coding
assistant (Hermes Agent, model deepseek-v4.1-flash) working from the
tree and the git history.  I reviewed the diff and the reasoning, and
I am responsible for the submission.

 arch/arm64/configs/defconfig | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 7b4985b29b21..513f8d6be073 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -424,7 +424,6 @@ CONFIG_MLX5_CORE_EN=y
 # CONFIG_NET_VENDOR_NETRONOME is not set
 # CONFIG_NET_VENDOR_NVIDIA is not set
 # CONFIG_NET_VENDOR_OKI is not set
-# CONFIG_NET_VENDOR_PACKET_ENGINES is not set
 # CONFIG_NET_VENDOR_QLOGIC is not set
 # CONFIG_NET_VENDOR_BROCADE is not set
 CONFIG_QCOM_EMAC=m
@@ -1756,7 +1755,6 @@ CONFIG_QCOMTEE=m
 CONFIG_MUX_GPIO=m
 CONFIG_MUX_MMIO=y
 CONFIG_SLIMBUS=m
-CONFIG_SLIM_QCOM_CTRL=m
 CONFIG_SLIM_QCOM_NGD_CTRL=m
 CONFIG_INTERCONNECT=y
 CONFIG_INTERCONNECT_IMX=y
@@ -1824,7 +1822,6 @@ CONFIG_SQUASHFS=y
 CONFIG_PSTORE_RAM=m
 CONFIG_NFS_FS=y
 CONFIG_NFS_V4=y
-CONFIG_NFS_V4_1=y
 CONFIG_NFS_V4_2=y
 CONFIG_ROOT_NFS=y
 CONFIG_9P_FS=m
@@ -1861,7 +1858,6 @@ CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y
 CONFIG_DEBUG_INFO_REDUCED=y
 CONFIG_MAGIC_SYSRQ=y
 CONFIG_DEBUG_FS=y
-# CONFIG_SCHED_DEBUG is not set
 # CONFIG_DEBUG_PREEMPT is not set
 # CONFIG_FTRACE is not set
 CONFIG_CORESIGHT=m

base-commit: 7475ea8b58616b33c04afb976cf0fbaad9dd63fb
-- 
2.53.0