ABI: testing/sysfs-devices-system-cpu: remove duplicated core_id

This was already defined at stable/sysfs-devices-system-cpu with
the same description, as pointed by get_abi.pl:

	Warning: /sys/devices/system/cpu/cpuX/topology/core_id is defined 2 times:  Documentation/ABI/stable/sysfs-devices-system-cpu:38  Documentation/ABI/testing/sysfs-devices-system-cpu:69

Remove the duplicated one.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/1e92337c1ef74f5eb9e1c1871e20b858b490d269.1656235926.git.mchehab@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>