staging: r8188eu: pBandType is never set

pBandType is never set, it stays at the default value 0. Remove it
from odm_dm_struct and remove related unneeded code.

Acked-by: Martin Kaiser <martin@kaiser.cx>
Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20211015163507.9091-6-straube.linux@gmail.com


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