Remove useless Opts from fuchsia-zircon

Change-Id: I5584eb1eb68e8ba58bb861bf282d31aa027758a2
diff --git a/src/sys/fuchsia/selector.rs b/src/sys/fuchsia/selector.rs
index c622f38..52ca7d7 100644
--- a/src/sys/fuchsia/selector.rs
+++ b/src/sys/fuchsia/selector.rs
@@ -94,9 +94,7 @@
         // compatible with Ready.
         assert_fuchsia_ready_repr();
 
-        let port = Arc::new(
-            zircon::Port::create(zircon::PortOpts::Default)?
-        );
+        let port = Arc::new(zircon::Port::create()?);
 
         // offset by 1 to avoid choosing 0 as the id of a selector
         let id = NEXT_ID.fetch_add(1, Ordering::Relaxed) + 1;