Fix deprecation warning

[[Imported from SVN: r11829]]

dune/solvers/norms/energynorm.hh

@@ -92,9 +92,9 @@
 
         /** \brief Compute the squared norm for a given vector and matrix
             \todo This could be implemented without the temporary. */
-        static field_type normSquared(const DiscFuncType& u,
-                                      const OperatorType& A,
-                                      const double tol=1e-10)
+        DUNE_DEPRECATED static field_type normSquared(const DiscFuncType& u,
+                                                      const OperatorType& A,
+                                                      const double tol=1e-10)
         {
             DiscFuncType tmp(u.size());
             A.mv(u, tmp);
@@ -110,7 +110,7 @@
 
             return ret;
 
-        } DUNE_DEPRECATED;
+        };
 
     protected: