staging: rtl8723bs: remove struct rt_channel_plan_5g

remove struct rt_channel_plan_5g, for rtl8723bs works
only on 2.4Ghz band.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/c9780328291ef84a8b0874e34da881d5e3885ddc.1624367071.git.fabioaiuto83@gmail.com


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