Removed bam merge stage.
Removed bam merge stage.

aehrc/ngsane,aehrc/ngsane,clark-lab/ngsane,clark-lab/ngsane,clark-lab/ngsane,aehrc/ngsane,aehrc/ngsane,BauerLab/ngsane,BauerLab/ngsane,clark-lab/ngsane,BauerLab/ngsane,BauerLab/ngsane