staging: comedi: usbduxsigma: remove NOISY_DUX_DEBUGBUG

This define enables a bunch of printk debug in send_dux_commands().
This is just noise used for development debuging. Remove it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>