Staging: mimio: remove the mimio driver

It turns out that Mimio has a userspace solution for this product using
libusb, and the in-kernel driver is just getting in the way now and
causing problems.  So they have asked that the in-kernel driver be
removed.  As the staging driver wasn't quite working anyway, and Mimio
supports their libusb solution for all distros, I am removing the
in-kernel driver.

The libusb solution can be downloaded from:
	http://www.mimio.com/downloads/mimio_studio_software/linux.asp

Cc: <mwilder@cs.nmsu.edu>
Cc: Phil Hannent <phil@hannent.co.uk>
Cc: Marc Rousseau <Marc.Rousseau@mimio.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>