remove samtools install, use system install for now
remove samtools install, use system install for now

macmanes-lab/trinityrnaseq,macmanes-lab/trinityrnaseq,macmanes-lab/trinityrnaseq,macmanes-lab/trinityrnaseq,macmanes-lab/trinityrnaseq,macmanes-lab/trinityrnaseq,macmanes-lab/trinityrnaseq,macmanes-lab/trinityrnaseq