https://stackoverflow.com/questions/21638697/disable-maven-download-progress-indication
Add -B or --batch-mode argument to the mvn command line (you may be able to insert this into the gloals and options field in your Jenkins Maven build task), or pass an SLF4J property:
org.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn