staging: r8188eu: remove RaSupport88E from struct odm_dm_struct

The field RaSupport88E of struct odm_dm_struct is unused.
Remove it.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210916082906.25294-2-straube.linux@gmail.com


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