code: def delete_fastqs(job, patient_dict):
      
      for key in patient_dict.keys():
          if 'fastq' not in key:
              continue
          job.fileStore.logToMaster('Deleting "%s:%s" ' % (patient_dict['patient_id'], key) +
                                    'from the filestore.')
          job.fileStore.deleteGlobalFile(patient_dict[key])
      return None
docs: Delete the fastqs from the job Store once their purpose has been achieved (i.e. after all
      mapping steps)
  
      :param dict patient_dict: Dict of list of input fastqs