Removed ETHCouplingType
Removed ETHCouplingType

Refs idaholab/relap-7#19688
milljm/moose,milljm/moose,lindsayad/moose,laagesen/moose,sapitts/moose,laagesen/moose,sapitts/moose,jessecarterMOOSE/moose,idaholab/moose,jessecarterMOOSE/moose,jessecarterMOOSE/moose,dschwen/moose,lindsayad/moose,jessecarterMOOSE/moose,sapitts/moose,bwspenc/moose,idaholab/moose,sapitts/moose,harterj/moose,andrsd/moose,andrsd/moose,bwspenc/moose,lindsayad/moose,milljm/moose,andrsd/moose,milljm/moose,harterj/moose,milljm/moose,andrsd/moose,laagesen/moose,lindsayad/moose,idaholab/moose,laagesen/moose,jessecarterMOOSE/moose,dschwen/moose,harterj/moose,andrsd/moose,harterj/moose,idaholab/moose,bwspenc/moose,idaholab/moose,bwspenc/moose,dschwen/moose,laagesen/moose,dschwen/moose,harterj/moose,sapitts/moose,bwspenc/moose,dschwen/moose,lindsayad/moose