heatExchanger tutorial: removed unnecessary creation of empty baffle patch

tutorials/heatTransfer/chtMultiRegionFoam/heatExchanger/Allrun

@@ -2,9 +2,9 @@
 
 cd ${0%/*} || exit 1    # Run from this directory
 
-./Allrun.pre
-
 # Source tutorial run functions
 . $WM_PROJECT_DIR/bin/tools/RunFunctions
 
+./Allmesh
+
 runApplication $(getApplication)

tutorials/heatTransfer/chtMultiRegionFoam/heatExchanger/Allrun-parallel

@@ -5,7 +5,7 @@ cd ${0%/*} || exit 1    # Run from this directory
 # Source tutorial run functions
 . $WM_PROJECT_DIR/bin/tools/RunFunctions
 
-./Allrun.pre
+./Allmesh
 
 runApplication -s air    decomposePar -region air
 runApplication -s porous decomposePar -region porous

tutorials/heatTransfer/chtMultiRegionFoam/heatExchanger/system/air/blockMeshDict

@@ -133,13 +133,6 @@ boundary
             (20 21 22 23)
         );
     }
-
-    blades
-    {
-        type wall;
-        faces
-        ();
-    }
 );
 
 mergePatchPairs

tutorials/heatTransfer/chtMultiRegionFoam/heatExchanger/system/air/createBafflesDict

@@ -19,30 +19,24 @@ FoamFile
 // faces.
 internalFacesOnly true;
 
-
-// Baffles to create.
 baffles
 {
-    baffleFaces
+    baffles
     {
         //- Use predefined faceZone to select faces and orientation.
         type        faceZone;
         zoneName    rotorBlades;
 
-
         patches
         {
             master
             {
-                //- Master side patch
-                name            blades;
-                type            patch;
+                name        blades;
+                type        wall;
             }
             slave
             {
-                //- Slave side patch
-                name            blades;
-                type            patch;
+                $master;
             }
         }
     }