staging: rtl8723bs: remove unused enum items related to channel bonding

remove unused enum items related to channel bonding.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/beb6760c04116b4720edf7257149828653bbda26.1624367071.git.fabioaiuto83@gmail.com


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