remove the mp_node_id term -- seems unneeded and reduces the number of documents
Merge branch 'master' of https://github.com/mpi2/PhenotypeArchive

# By jwgwarren
# Via jwgwarren
* 'master' of https://github.com/mpi2/PhenotypeArchive:
  Sanger indexer with more fields - symbol should be mutli or single ?