removes --mm from hisat params because it doesn't appear to work
removes --mm from hisat params because it doesn't appear to work

DCGenomics/hackathon_v001_rnaseq,DCGenomics/hackathon_v001_rnaseq,NCBI-Hackathons/hackathon_v001_rnaseq,DCGenomics/hackathon_v001_rnaseq,NCBI-Hackathons/hackathon_v001_rnaseq,NCBI-Hackathons/hackathon_v001_rnaseq