staging: comedi: ni_labpc_cs: remove '#undef LABPC_DEBUG'

The LABPC_DEBUG define is not used in any of the code. Just
remove the #undef.
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/ni_labpc_cs.c

@@ -59,8 +59,6 @@ NI manuals:
 
 */
 
-#undef LABPC_DEBUG  /* debugging messages */
-
 #include "../comedidev.h"
 
 #include <linux/delay.h>