Cleaning up dagmc file a bit.
Cleaning up dagmc file a bit.

liangjg/openmc,amandalund/openmc,walshjon/openmc,shikhar413/openmc,amandalund/openmc,shikhar413/openmc,mit-crpg/openmc,mit-crpg/openmc,liangjg/openmc,walshjon/openmc,paulromano/openmc,liangjg/openmc,wbinventor/openmc,walshjon/openmc,smharper/openmc,amandalund/openmc,wbinventor/openmc,wbinventor/openmc,mit-crpg/openmc,wbinventor/openmc,shikhar413/openmc,liangjg/openmc,paulromano/openmc,smharper/openmc,paulromano/openmc,walshjon/openmc,smharper/openmc,smharper/openmc,paulromano/openmc,shikhar413/openmc,amandalund/openmc,mit-crpg/openmc