Simplify/clean up calculation of material TTB data
Simplify/clean up calculation of material TTB data

wbinventor/openmc,liangjg/openmc,walshjon/openmc,johnnyliu27/openmc,shikhar413/openmc,mit-crpg/openmc,johnnyliu27/openmc,walshjon/openmc,smharper/openmc,smharper/openmc,walshjon/openmc,liangjg/openmc,shikhar413/openmc,amandalund/openmc,amandalund/openmc,mit-crpg/openmc,walshjon/openmc,paulromano/openmc,johnnyliu27/openmc,mit-crpg/openmc,wbinventor/openmc,mit-crpg/openmc,wbinventor/openmc,paulromano/openmc,shikhar413/openmc,liangjg/openmc,smharper/openmc,paulromano/openmc,wbinventor/openmc,johnnyliu27/openmc,shikhar413/openmc,amandalund/openmc,smharper/openmc,amandalund/openmc,paulromano/openmc,liangjg/openmc