Remove traces of XFEM from HeatConduction.C
Remove traces of XFEM from HeatConduction.C

giopastor/moose,SudiptaBiswas/moose,giopastor/moose,laagesen/moose,Chuban/moose,laagesen/moose,katyhuff/moose,sapitts/moose,laagesen/moose,joshua-cogliati-inl/moose,andrsd/moose,idaholab/moose,sapitts/moose,jasondhales/moose,nuclear-wizard/moose,yipenggao/moose,idaholab/moose,bwspenc/moose,backmari/moose,jasondhales/moose,milljm/moose,permcody/moose,milljm/moose,yipenggao/moose,liuwenf/moose,jhbradley/moose,milljm/moose,SudiptaBiswas/moose,backmari/moose,andrsd/moose,joshua-cogliati-inl/moose,jessecarterMOOSE/moose,sapitts/moose,permcody/moose,bwspenc/moose,idaholab/moose,laagesen/moose,friedmud/moose,joshua-cogliati-inl/moose,harterj/moose,nuclear-wizard/moose,friedmud/moose,harterj/moose,milljm/moose,stimpsonsg/moose,friedmud/moose,SudiptaBiswas/moose,dschwen/moose,andrsd/moose,giopastor/moose,liuwenf/moose,lindsayad/moose,Chuban/moose,stimpsonsg/moose,jessecarterMOOSE/moose,permcody/moose,jessecarterMOOSE/moose,katyhuff/moose,harterj/moose,idaholab/moose,Chuban/moose,yipenggao/moose,bwspenc/moose,idaholab/moose,YaqiWang/moose,dschwen/moose,katyhuff/moose,jhbradley/moose,nuclear-wizard/moose,jhbradley/moose,laagesen/moose,jessecarterMOOSE/moose,yipenggao/moose,dschwen/moose,jhbradley/moose,harterj/moose,dschwen/moose,joshua-cogliati-inl/moose,sapitts/moose,liuwenf/moose,harterj/moose,bwspenc/moose,friedmud/moose,liuwenf/moose,katyhuff/moose,jasondhales/moose,SudiptaBiswas/moose,backmari/moose,giopastor/moose,lindsayad/moose,andrsd/moose,jessecarterMOOSE/moose,liuwenf/moose,nuclear-wizard/moose,jasondhales/moose,lindsayad/moose,permcody/moose,YaqiWang/moose,stimpsonsg/moose,sapitts/moose,stimpsonsg/moose,Chuban/moose,dschwen/moose,bwspenc/moose,lindsayad/moose,lindsayad/moose,backmari/moose,SudiptaBiswas/moose,milljm/moose,andrsd/moose,YaqiWang/moose,liuwenf/moose,YaqiWang/moose