Remove check for 1.6 in picard public release script
Remove check for 1.6 in picard public release script

broadinstitute/picard,nh13/picard,annkupi/picard,alecw/picard,broadinstitute/picard,alecw/picard,broadinstitute/picard,nh13/picard,nh13/picard,broadinstitute/picard,annkupi/picard,annkupi/picard,alecw/picard,nh13/picard,alecw/picard,annkupi/picard,broadinstitute/picard