Remove timers for retransmission

The QoS 1 flow right now includes a retransmission scheme which is not encouraged in the spec.. so we can remove it and refactor to simplify the code/increase performance/avoid multiple resendings.

> While a modern TCP network is unlikely to lose packets, a Client or Server is permitted to attempt redelivery of unacknowledged packets at other times. However, redelivery is not encouraged unless a network failure has been detected.