machine: drop obsolete SERIAL_CONSOLES_CHECK

(From meta-yocto rev: 715de050774907dd5596d826929b6588593a91ae)

Signed-off-by: Lee Chee Yang <chee.yang.lee@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-yocto-bsp/conf/machine/beaglebone-yocto.conf

@@ -18,7 +18,6 @@ MACHINE_ESSENTIAL_EXTRA_RDEPENDS += "kernel-image kernel-devicetree"
 do_image_wic[depends] += "mtools-native:do_populate_sysroot dosfstools-native:do_populate_sysroot virtual/bootloader:do_deploy"
 
 SERIAL_CONSOLES ?= "115200;ttyS0 115200;ttyO0 115200;ttyAMA0"
-SERIAL_CONSOLES_CHECK = "${SERIAL_CONSOLES}"
 
 PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
 PREFERRED_VERSION_linux-yocto ?= "6.1%"

meta-yocto-bsp/conf/machine/genericx86-64.conf

@@ -6,6 +6,5 @@ DEFAULTTUNE ?= "core2-64"
 require conf/machine/include/x86/tune-core2.inc
 require conf/machine/include/genericx86-common.inc
 
-SERIAL_CONSOLES_CHECK = "ttyS0"
 #For runqemu
 QB_SYSTEM_NAME = "qemu-system-x86_64"