Revert "Merge patch series "pxe: Allow extlinux booting without CMDLINE enabled""

As reported by Jonas Karlman this series breaks booting on some AArch64
platforms with common use cases. For now the best path forward is to
revert the series.

This reverts commit 777c28460947371ada40868dc994dfe8537d7115, reversing
changes made to ab3453e7b12daef47b9e91da2a2a3d48615dc6fc.

Link: https://lore.kernel.org/u-boot/50dfa3d6-a1ca-4492-a3fc-8d8c56b40b43@kwiboo.se/
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/tools-only_defconfig b/configs/tools-only_defconfig
index 5de482a..b54d2ce 100644
--- a/configs/tools-only_defconfig
+++ b/configs/tools-only_defconfig
@@ -12,10 +12,10 @@
 # CONFIG_BOOTSTD_FULL is not set
 # CONFIG_BOOTMETH_CROS is not set
 # CONFIG_BOOTMETH_VBE is not set
-# CONFIG_BOOTM is not set
 CONFIG_USE_BOOTCOMMAND=y
 CONFIG_BOOTCOMMAND="run distro_bootcmd"
 # CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_BOOTM is not set
 # CONFIG_CMD_BOOTI is not set
 # CONFIG_CMD_ELF is not set
 # CONFIG_CMD_EXTENSION is not set