[Enhancement] Remove unused class ServiceThread in org.apache.rocketmq.remoting.common

[qianye1001]

Before Creating the Enhancement Request

• I have confirmed that this should be classified as an enhancement rather than a bug/feature.

Summary

There are now two ServiceThread classes, one in common and the other in the remoting package. ServiceThread class in the remoting package is not used by anyone, so it can be removed to prevent misuse.

Motivation

There are now two ServiceThread classes, one in common and the other in the remoting package. ServiceThread class in the remoting package is not used by anyone, so it can be removed to prevent misuse.

Describe the Solution You'd Like

There are now two ServiceThread classes, one in common and the other in the remoting package. ServiceThread class in the remoting package is not used by anyone, so it can be removed to prevent misuse.

Describe Alternatives You've Considered

null

Additional Context

No response