code: def delete_fastqs(job, fastqs):
      
      for fq_type in ['tumor_rna', 'tumor_dna', 'normal_dna']:
          for i in xrange(0,2):
              job.fileStore.deleteGlobalFile(fastqs[fq_type][i])
      return None
docs: This module will delete the fastqs from teh job Store once their purpose has been achieved (i.e.
      after all mapping steps)
  
      ARGUMENTS
      1. fastqs: Dict of list of input fastqs
           fastqs
              +- 'tumor_rna': [<JSid for 1.fastq> , <JSid for 2.fastq>]
              +- 'tumor_dna': [<JSid for 1.fastq> , <JSid for 2.fastq>]
              +- 'normal_dna': [<JSid for 1.fastq> , <JSid for 2.fastq>]