Remove Avro 1.8.x download step from Jenkins Scala 2.12 installation.
Remove Avro 1.8.x download step from Jenkins Scala 2.12 installation.

heuermh/adam,heuermh/adam,bigdatagenomics/adam,heuermh/adam,heuermh/adam,bigdatagenomics/adam,bigdatagenomics/adam,bigdatagenomics/adam