Remove some unused parameter warnings

dune/gmsh4/gmsh4reader.hh

@@ -142,7 +142,7 @@ namespace Dune
       return result;
     }
 
-    void readString(std::istream& stream, std::string& name)
+    void readString(std::istream& /*stream*/, std::string& name)
     {
       DUNE_THROW(Dune::NotImplemented, "Method readString() not yet implemented");
       name = "";

dune/gmsh4/gridcreators/continuousgridcreator.hh

@@ -54,10 +54,10 @@ namespace Dune
       }
 
       template <class ElementAttributes, class BoundaryEntities>
-      void insertElementsImpl (std::size_t numElements,
-                               std::pair<std::size_t,std::size_t> elementTagRange,
+      void insertElementsImpl (std::size_t /*numElements*/,
+                               std::pair<std::size_t,std::size_t> /*elementTagRange*/,
                                std::vector<ElementAttributes> const& entityBlocks,
-                               BoundaryEntities const& boundaryEntities)
+                               BoundaryEntities const& /*boundaryEntities*/)
       {
         std::vector<unsigned int> connectivity;
         std::size_t cornerIndex = 0;