Deprecate method declaring an Handler<AmqpMessage> parameter

[vietj]

Currently the client declares a few methods that takes an Handler<AmqpMessage as parameter, this handler is then set on a ReadStream<AmqpMessage>. Such method raise issues with futurisation as the futurised form has the same erased signature than other methods, e.g

Future<AmqpReceiver> createReceiver(String, Handler<AmqpMessage>);
void createReceiver(String, Handler<AsyncResult<AmqpReceiver>>);

Such methods are removed in Vert.x 4 and are deprecated in 3.x