staging: comedi: quatech_daqp_cs: remove #define pr_fmt

There are not pr_[level] uses in this file. Remove the pr_fmt
define.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/quatech_daqp_cs.c

@@ -47,8 +47,6 @@ Status: works
 Devices: [Quatech] DAQP-208 (daqp), DAQP-308
 */
 
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
 #include "../comedidev.h"
 #include <linux/semaphore.h>