staging: rtl8723bs: remove item from TODO list

remove item related to 5Ghz code deletion from
driver's TODO list.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/842b5ce0623be738d611d883433a8bf2aa895e90.1624367072.git.fabioaiuto83@gmail.com


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