convert sendfile{,64} to COMPAT_SYSCALL_DEFINE

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/compat.c

@@ -1718,25 +1718,3 @@ COMPAT_SYSCALL_DEFINE3(open_by_handle_at, int, mountdirfd,
 	return do_handle_open(mountdirfd, handle, flags);
 }
 #endif
-
-#ifdef __ARCH_WANT_COMPAT_SYS_SENDFILE
-asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
-				    compat_off_t __user *offset, compat_size_t count)
-{
-	loff_t pos;
-	off_t off;
-	ssize_t ret;
-
-	if (offset) {
-		if (unlikely(get_user(off, offset)))
-			return -EFAULT;
-		pos = off;
-		ret = do_sendfile(out_fd, in_fd, &pos, count, MAX_NON_LFS);
-		if (unlikely(put_user(pos, offset)))
-			return -EFAULT;
-		return ret;
-	}
-
-	return do_sendfile(out_fd, in_fd, NULL, count, 0);
-}
-#endif /* __ARCH_WANT_COMPAT_SYS_SENDFILE */