Time::timeName(): no longer needed, calls replaced by name()

The timeName() function simply returns the dimensionedScalar::name() which holds
the user-time name of the current time and now that timeName() is no longer
virtual the dimensionedScalar::name() can be called directly.  The timeName()
function implementation is maintained for backward-compatibility.

applications/utilities/mesh/advanced/splitCells/splitCells.C

@@ -706,7 +706,7 @@ int main(int argc, char *argv[])
             mesh.setInstance(oldInstance);
         }
 
-        Info<< "Writing refined morphMesh to time " << runTime.timeName()
+        Info<< "Writing refined morphMesh to time " << runTime.name()
             << endl;
 
         mesh.write();