[PARISC] Remove unused variable in signal.c

Remove unused variable "struct siginfo si" in signal.c
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

arch/parisc/kernel/signal.c

@@ -296,7 +296,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	struct rt_sigframe __user *frame;
 	unsigned long rp, usp;
 	unsigned long haddr, sigframe_size;
-	struct siginfo si;
 	int err = 0;
 #ifdef __LP64__
 	compat_int_t compat_val;