[port][signal] Remove obsolete PORT_READABLE signal bit
Ports cannot be waited on via object wait, only via port wait. This
signal bit makes no sense and is unused.
Change-Id: I74452eda2d1280584af86f2d32e2402154a2e177
diff --git a/system/public/zircon/types.h b/system/public/zircon/types.h
index eacb4f2..72704bd 100644
--- a/system/public/zircon/types.h
+++ b/system/public/zircon/types.h
@@ -121,9 +121,6 @@
#define ZX_SOCKET_ACCEPT __ZX_OBJECT_SIGNAL_8
#define ZX_SOCKET_SHARE __ZX_OBJECT_SIGNAL_9
-// Port
-#define ZX_PORT_READABLE __ZX_OBJECT_READABLE
-
// Fifo
#define ZX_FIFO_READABLE __ZX_OBJECT_READABLE
#define ZX_FIFO_WRITABLE __ZX_OBJECT_WRITABLE