Avoiding SLF4J when running the cronjob automatic-workflow/webdanica-analysis-cron.sh

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/disk2/test/automatic-workflow/lib/slf4j-log4j12-1.7.12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/disk2/test/automatic-workflow/lib/logback-classic-1.0.13.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
Found 0 harvestlogs to process
Processing done of all 0 harvestlogs at Fri Oct  6 02:00:02 CEST 2017

Found 0 harvestlogs to process
Processing done of all 0 harvestlogs at fre okt  6 11:08:03 CEST 2017