Fix bug: remove vcf2maf

workflow.wdl

       cluster_config=cluster_config,
       disk_size=disk_size
     }
-
-    call vcf2maf.vcf2maf as snp_somatic_vcf2maf {
-      input:
-      sample=sample_id,
-      multianno_txt=snp_somatic_annovar.multianno_txt,
-      docker=maftools_docker,
-      cluster_config=cluster_config,
-      disk_size=disk_size
-    }
     
     call annovar.annovar as snp_loh_annovar {
       input: