DOC: Remove _id, no longer accepted downstream.
DOC: Remove _id, no longer accepted downstream.

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