[IA64] remove sys32_pause

It's just a duplicate of the native sys_pause, which we can use after
defining __ARCH_WANT_SYS_PAUSE.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/ia32/ia32_entry.S

@@ -202,7 +202,7 @@ ia32_syscall_table:
 	data8 sys32_ptrace
 	data8 sys32_alarm
 	data8 sys_ni_syscall
-	data8 sys32_pause
+	data8 sys_pause
 	data8 compat_sys_utime	  /* 30 */
 	data8 sys_ni_syscall	  /* old stty syscall holder */
 	data8 sys_ni_syscall	  /* old gtty syscall holder */

arch/ia64/ia32/sys_ia32.c

@@ -1703,14 +1703,6 @@ sys32_sigaltstack (ia32_stack_t __user *uss32, ia32_stack_t __user *uoss32,
 	return ret;
 }
 
-asmlinkage int
-sys32_pause (void)
-{
-	current->state = TASK_INTERRUPTIBLE;
-	schedule();
-	return -ERESTARTNOHAND;
-}
-
 asmlinkage int
 sys32_msync (unsigned int start, unsigned int len, int flags)
 {

arch/ia64/include/asm/unistd.h

@@ -337,6 +337,7 @@
 # define __ARCH_WANT_SYS_NICE
 # define __ARCH_WANT_SYS_OLD_GETRLIMIT
 # define __ARCH_WANT_SYS_OLDUMOUNT
+# define __ARCH_WANT_SYS_PAUSE
 # define __ARCH_WANT_SYS_SIGPENDING
 # define __ARCH_WANT_SYS_SIGPROCMASK
 # define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND