surfaceFilmModel: film model selection now handled by fvModel

There is no longer any need for the surfaceFilmModel abstract base class and
"New" selection method as surface films are now handled within the fvModel
framework.  This makes the surfaceFilmModel entry in the surfaceFilmProperties
dictionary redundant.

The surfaceFilm and VoFSurfaceFilm fvModels now instantiate a thermoSingleLayer
providing direct access to all the film functions, simplifying the
implementation better ensuring consistency between the film and primary region
equations.

tutorials/combustion/buoyantReactingFoam/Lagrangian/cylinder/constant/surfaceFilmProperties

@@ -10,12 +10,10 @@ FoamFile
     format      ascii;
     class       dictionary;
     location    "constant";
-    object      SurfaceFilmProperties;
+    object      surfaceFilmProperties;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-surfaceFilmModel thermoSingleLayer;
-
 regionName      wallFilmRegion;
 
 viscosity

tutorials/combustion/buoyantReactingFoam/Lagrangian/hotBoxes/constant/surfaceFilmProperties

@@ -10,12 +10,10 @@ FoamFile
     format      ascii;
     class       dictionary;
     location    "constant";
-    object      SurfaceFilmProperties;
+    object      surfaceFilmProperties;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-surfaceFilmModel thermoSingleLayer;
-
 regionName      wallFilmRegion;
 
 viscosity

tutorials/combustion/buoyantReactingFoam/Lagrangian/rivuletPanel/constant/surfaceFilmProperties

@@ -10,12 +10,10 @@ FoamFile
     format      ascii;
     class       dictionary;
     location    "constant";
-    object      SurfaceFilmProperties;
+    object      surfaceFilmProperties;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-surfaceFilmModel thermoSingleLayer;
-
 regionName      wallFilmRegion;
 
 viscosity

tutorials/combustion/buoyantReactingFoam/Lagrangian/splashPanel/constant/surfaceFilmProperties

@@ -10,12 +10,10 @@ FoamFile
     format      ascii;
     class       dictionary;
     location    "constant";
-    object      SurfaceFilmProperties;
+    object      surfaceFilmProperties;
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-surfaceFilmModel thermoSingleLayer;
-
 regionName      wallFilm;
 
 viscosity

tutorials/multiphase/compressibleInterFoam/laminar/cylinder/constant/fvModels

@@ -29,8 +29,6 @@ VoFSurfaceFilm
     type    VoFSurfaceFilm;
 
     libs    ("libVoFSurfaceFilm.so");
-
-    phase   liquid;
 }
 
 // ************************************************************************* //

tutorials/multiphase/compressibleInterFoam/laminar/cylinder/constant/surfaceFilmProperties

@@ -14,8 +14,6 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-surfaceFilmModel thermoSingleLayer;
-
 regionName      wallFilmRegion;
 
 phase           liquid;

tutorials/multiphase/compressibleInterFoam/laminar/plateFilm/constant/surfaceFilmProperties

@@ -14,8 +14,6 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-surfaceFilmModel thermoSingleLayer;
-
 regionName      plateRegion;
 
 phase           liquid;