MNT:Remove the 2015 migration folder after adding it to migration
MNT:Remove the 2015 migration folder after adding it to migration

arkilic/metadatastore,arkilic/metadatastore,NSLS-II/metadatastore,hhslepicka/metadatastore,tacaswell/metadataStore,ericdill/databroker,tacaswell/metadataStore,hhslepicka/metadatastore,NSLS-II/metadatastore,ericdill/databroker