Revert "Add INLINE_SYSCALL_RETURN/INLINE_SYSCALL_ERROR_RETURN"

This reverts commit 0c5b8b5941.

sysdeps/unix/sysv/linux/tcsendbrk.c

@@ -39,6 +39,7 @@ tcsendbreak (int fd, int duration)
   /* ioctl can't send a break of any other duration for us.
      This could be changed to use trickery (e.g. lower speed and
      send a '\0') to send the break, but for now just return an error.  */
-  return INLINE_SYSCALL_ERROR_RETURN (-EINVAL, int, -1);
+  __set_errno (EINVAL);
+  return -1;
 #endif
 }