EventHandler: Deprecate Call(args, no_remote, ts), add Call(args)

The ts parameter was only added to Call() for the Broker::auto_publish()
functionality and propagating the network timestamp. By now, the auto-publish
functionality is deprecated, so it'd be good to cleanup that signature. There
won't be any need for no_remote in the future either.

Allow users to just use Call() instead.

src/Event.cc

@@ -49,7 +49,11 @@ void Event::Dispatch(bool no_remote) {
         reporter->BeginErrorHandler();
 
     try {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+        // Replace in v8.1 with handler->Call(&args).
         handler->Call(&args, no_remote, ts);
+#pragma GCC diagnostic pop
     }
 
     catch ( InterpreterException& e ) {