Remove unused param.

Change-Id: Idf26c3bf4eec7ed17dbfb99b40c314bce7996101
diff --git a/rsThreadIO.h b/rsThreadIO.h
index d56a1c9..62e3e33 100644
--- a/rsThreadIO.h
+++ b/rsThreadIO.h
@@ -36,7 +36,7 @@
 
     // Plays back commands from the client.
     // Returns true if any commands were processed.
-    bool playCoreCommands(Context *con, bool waitForCommand, int waitFd);
+    bool playCoreCommands(Context *con, int waitFd);
 
     void setTimeoutCallback(void (*)(void *), void *, uint64_t timeout);