decoupled tutorial: streamline the code a bit

we do not need to set any default arguments for the type tag in the
problem definition. the type tag which is actually used is chosen in
the main function.

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@4805 2fb0f335-1f38-0410-981e-8018bf24f1b0

tutorial/tutorialproblem_decoupled.hh

@@ -52,8 +52,7 @@ NEW_TYPE_TAG(TutorialProblemDecoupled, INHERITS_FROM(DecoupledTwoP)); /*@\label{
 // Set the problem property
 SET_PROP(TutorialProblemDecoupled, Problem) /*@\label{tutorial-decoupled:set-problem}@*/
 {
-public:
-    typedef Dumux::TutorialProblemDecoupled<TTAG(TutorialProblemDecoupled)> type;
+    typedef Dumux::TutorialProblemDecoupled<TypeTag> type;
 };
 
 // Set the grid type
@@ -128,7 +127,7 @@ SET_BOOL_PROP(TutorialProblemDecoupled, EnableGravity, false); /*@\label{tutoria
 /*! \ingroup DecoupledProblems
  * @brief Problem class for the decoupled tutorial
 */
-template<class TypeTag = TTAG(TutorialProblemDecoupled)>
+template<class TypeTag>
 class TutorialProblemDecoupled: public IMPESProblem2P<TypeTag, TutorialProblemDecoupled<TypeTag> > /*@\label{tutorial-decoupled:def-problem}@*/
 {
     typedef TutorialProblemDecoupled<TypeTag> ThisType;