create deepcopy in triso model and remove the unnecessary sorted fucntion
create deepcopy in triso model and remove the unnecessary sorted fucntion

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