*Motivation* In versions older than 2.5.0, PULSAR_PREFIX is used for appending settings that don't exist in existing configuration files. *Modifications* Remove `PULSAR_PREFIX` for backward compatibility
*Motivation* In versions older than 2.5.0, PULSAR_PREFIX is used for appending settings that don't exist in existing configuration files. *Modifications* Remove `PULSAR_PREFIX` for backward compatibility