Removed unneeded enumeration
Removed unneeded enumeration

mit-crpg/openmc,paulromano/openmc,wbinventor/openmc,shikhar413/openmc,paulromano/openmc,lilulu/openmc,shikhar413/openmc,walshjon/openmc,walshjon/openmc,wbinventor/openmc,kellyrowland/openmc,amandalund/openmc,lilulu/openmc,samuelshaner/openmc,mjlong/openmc,shikhar413/openmc,liangjg/openmc,johnnyliu27/openmc,smharper/openmc,amandalund/openmc,walshjon/openmc,samuelshaner/openmc,mit-crpg/openmc,bhermanmit/openmc,johnnyliu27/openmc,mjlong/openmc,mit-crpg/openmc,walshjon/openmc,johnnyliu27/openmc,bhermanmit/openmc,smharper/openmc,amandalund/openmc,smharper/openmc,paulromano/openmc,paulromano/openmc,liangjg/openmc,amandalund/openmc,kellyrowland/openmc,liangjg/openmc,mit-crpg/openmc,smharper/openmc,wbinventor/openmc,liangjg/openmc,samuelshaner/openmc,lilulu/openmc,johnnyliu27/openmc,samuelshaner/openmc,shikhar413/openmc,wbinventor/openmc