sendLatencyFaultEnable logical optimization

[alaric27]

What is the purpose of the change

selectOneMessageQueue logical optimization
I find this logic useless. When find available MessageQueue can just return

Brief changelog

delete code if (null == lastBrokerName || mq.getBrokerName().equals(lastBrokerName))

Verifying this change

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[coveralls]

Coverage decreased (-0.04%) to 43.143% when pulling eb1af61 on alaric27:bugfix into f8a67ad on apache:master.