staging: comedi: drivers (core): remove BUG_ON in comedi_auto_unconfig()

comedi_find_board_minor() will always return a ninor number between
0 and < COMEDI_NUM_BOARD_MINORS, or -ENODEV if a minor is not found.

Remove the unnecessary BUG_ON().
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>

drivers/staging/comedi/drivers.c

@@ -493,7 +493,6 @@ void comedi_auto_unconfig(struct device *hardware_device)
 	minor = comedi_find_board_minor(hardware_device);
 	if (minor < 0)
 		return;
-	BUG_ON(minor >= COMEDI_NUM_BOARD_MINORS);
 	comedi_free_board_minor(minor);
 }
 EXPORT_SYMBOL_GPL(comedi_auto_unconfig);