MNT: Remove unused atom member
MNT: Remove unused atom member

danielballan/dataportal,danielballan/dataportal,ericdill/datamuxer,tacaswell/dataportal,NSLS-II/dataportal,danielballan/datamuxer,ericdill/databroker,NSLS-II/dataportal,tacaswell/dataportal,ericdill/databroker,danielballan/datamuxer,NSLS-II/datamuxer,ericdill/datamuxer