Remove useless mode argument.

Reported by: Liam J. Foy
Index: src/usr.sbin/lptcontrol/lptcontrol.c
===================================================================
--- src/usr.sbin/lptcontrol/lptcontrol.c	(revision 131)
+++ src/usr.sbin/lptcontrol/lptcontrol.c	(working copy)
@@ -96,7 +96,7 @@
 	if (irq_status == IRQ_UNSPECIFIED || argc != 0)
 		usage();
 
-	if ((fd = open(device, O_WRONLY, 0660)) < 0)
+	if ((fd = open(device, O_WRONLY)) < 0)
 		err(1, "open");
 	if (ioctl(fd, LPT_IRQ, &irq_status) < 0)
 		err(1, "ioctl");