MINOR: select: get rid of the now useless fd_compute_new_polled_status()

Do not call it anymore and avoid updating the fdstate.
diff --git a/src/ev_select.c b/src/ev_select.c
index 34daa09..db0814d 100644
--- a/src/ev_select.c
+++ b/src/ev_select.c
@@ -46,7 +46,7 @@
 	struct timeval delta;
 	int delta_ms;
 	int fds;
-	int updt_idx, en, eo;
+	int updt_idx, en;
 	char count;
 	int readnotnull, writenotnull;
 	int old_maxfd, new_maxfd, max_add_fd;
@@ -64,9 +64,7 @@
 
 		HA_SPIN_LOCK(FD_LOCK, &fdtab[fd].lock);
 		fdtab[fd].update_mask &= ~tid_bit;
-		eo = fdtab[fd].state;
-		en = fd_compute_new_polled_status(eo);
-		fdtab[fd].state = en;
+		en = fdtab[fd].state;
 		HA_SPIN_UNLOCK(FD_LOCK, &fdtab[fd].lock);
 
 		/* we have a single state for all threads, which is why we