openrisc: signal: remove unused DEBUG_SIG macro

Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: Stafford Horne <shorne@gmail.com>

arch/openrisc/kernel/signal.c

@@ -28,8 +28,6 @@
 #include <asm/ucontext.h>
 #include <linux/uaccess.h>
 
-#define DEBUG_SIG 0
-
 struct rt_sigframe {
 	struct siginfo info;
 	struct ucontext uc;