remove debug code

Former-commit-id: c351df36f1

src/builder/ExplicitGspnModelBuilder.cpp

@@ -110,8 +110,6 @@ namespace storm {
 
             }
             
-            std::cout << "print matrix:" << std::endl;
-            std::cout << matrix << std::endl;
             //auto labeling = getStateLabeling();
 
             return storm::models::sparse::MarkovAutomaton<double>(matrix, labeling, markovianStates, exitRates);