[SPARC]: Kill extern decl of 'panic_setup'.

This was made static in kernel/panic.c a long time ago.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/setup.c b/arch/sparc/kernel/setup.c
index 3cf78f1..5f1508e 100644
--- a/arch/sparc/kernel/setup.c
+++ b/arch/sparc/kernel/setup.c
@@ -191,7 +191,6 @@
 extern void sun4c_probe_vac(void);
 extern char cputypval;
 extern unsigned long start, end;
-extern void panic_setup(char *, int *);
 
 extern unsigned short root_flags;
 extern unsigned short root_dev;
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index 9b892ff..82b4d09 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -157,8 +157,6 @@
 	}
 }
 
-extern void panic_setup(char *, int *);
-
 extern unsigned short root_flags;
 extern unsigned short root_dev;
 extern unsigned short ram_flags;