sparc: cleanup after SunOS binary emulation removal

The following cleanups are now possible:
- arch/sparc/kernel/entry.S:ret_sys_call no longer has to be global
- arch/sparc/kernel/signal.c:sys_sigpause() can be removed

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/signal.c

@@ -105,11 +105,6 @@ static int _sigpause_common(old_sigset_t set)
 	return -ERESTARTNOHAND;
 }
 
-asmlinkage int sys_sigpause(unsigned int set)
-{
-	return _sigpause_common(set);
-}
-
 asmlinkage int sys_sigsuspend(old_sigset_t set)
 {
 	return _sigpause_common(set);