removing non-job pool mode

Created by: kmurica

Issue

ECDC-2619

Description of work

Removing the non-job pool way to run file writer as we want to move away from having two separate ways to run the filewriter. It should be possible to provide the same topic name for both the job pool and and command status command-status-uri=localhost:9092/Loki_writerCommand job-pool-uri=localhost:9092/Loki_writerCommand

System tests are updated to only use the job pool mode and nothing else. There are also updates to the file-writer-control library found in this PR: https://github.com/ess-dmsc/file-writer-control/pull/39