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/entry.S

@@ -1409,7 +1409,6 @@ syscall_is_too_hard:
 
 	st	%o0, [%sp + STACKFRAME_SZ + PT_I0]
 
-	.globl	ret_sys_call
 ret_sys_call:
 	ld	[%curptr + TI_FLAGS], %l6
 	cmp	%o0, -ERESTART_RESTARTBLOCK

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);