Remove prototypes that are in kernel_sigaction.h already

libc/sysdeps/linux/arm/sigaction.c

@@ -25,11 +25,6 @@
 #include <sys/syscall.h>
 #include <bits/kernel_sigaction.h>
 
-extern int __syscall_sigaction (int, const struct old_kernel_sigaction *__unbounded,
-				struct old_kernel_sigaction *__unbounded);
-extern int __syscall_rt_sigaction (int, const struct kernel_sigaction *__unbounded,
-				   struct kernel_sigaction *__unbounded, size_t);
-
 #define SA_RESTORER	0x04000000
 extern void __default_sa_restorer(void);
 extern void __default_rt_sa_restorer(void);