staging: r8188eu: remove unused defines from odm_RegDefine11N.h

Remove unused defines from odm_RegDefine11N.h.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210918181904.12000-14-straube.linux@gmail.com


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