remove sets and snappyHexMesh *Level files

bin/tools/CleanFunctions

@@ -64,6 +64,9 @@ cleanCase ()
 
     rm -rf constant/polyMesh/{allOwner*,cell*,face*,meshModifiers*} \
            constant/polyMesh/{owner*,neighbour*,point*,edge*} \
+           constant/polyMesh/{cellLevel,pointLevel,refinementHistory,surfaceIndex} \
+           constant/{cellLevel,pointLevel} \
+           constant/polyMesh/sets/ \
            > /dev/null 2>&1
 
     for f in `find . -name "*Dict"`