Merge branch 'cleanup/unused-params' into 'master'

Cleanup/unused params

See merge request !2088

(cherry picked from commit 009bb5a9)

4aab0660 [box][fickslaw] Mark param with [[maybe_unused]]
c696b361 [fluxvarscachefiller] Mark params with [[maybe_unused]]
b95b830a [fluxvariables] Mark params with [[maybe_unused]]

dumux/flux/box/fickslaw.hh

@@ -176,7 +176,7 @@ private:
     }
 
     static std::pair<Scalar, Scalar>
-    diffusionCoefficientsAtInterface_(const int phaseIdx, const int compIdx,
+    diffusionCoefficientsAtInterface_([[maybe_unused]] const int phaseIdx, const int compIdx,
                                       const VolumeVariables& insideVV, const VolumeVariables& outsideVV)
     {
         if constexpr (!FluidSystem::isTracerFluidSystem())

dumux/porousmediumflow/fluxvariables.hh

@@ -90,7 +90,7 @@ public:
      * \brief Returns the advective flux computed by the respective law.
      */
     template<typename FunctionType>
-    Scalar advectiveFlux(const int phaseIdx, const FunctionType& upwindTerm) const
+    Scalar advectiveFlux([[maybe_unused]] const int phaseIdx, [[maybe_unused]] const FunctionType& upwindTerm) const
     {
         if constexpr (enableAdvection)
         {
@@ -117,7 +117,7 @@ public:
     /*!
      * \brief Returns the diffusive fluxes computed by the respective law.
      */
-    Dune::FieldVector<Scalar, numComponents> molecularDiffusionFlux(const int phaseIdx) const
+    Dune::FieldVector<Scalar, numComponents> molecularDiffusionFlux([[maybe_unused]] const int phaseIdx) const
     {
         if constexpr (enableMolecularDiffusion)
             return MolecularDiffusionType::flux(this->problem(),
@@ -153,7 +153,7 @@ public:
      * \brief Returns the conductive flux computed by the respective law.
      * \note This overload is used in models considering local thermal nonequilibrium
      */
-    Scalar heatConductionFlux(int phaseIdx) const
+    Scalar heatConductionFlux([[maybe_unused]] const int phaseIdx) const
     {
         if constexpr (enableEnergyBalance)
             return HeatConductionType::flux(this->problem(),

dumux/porousmediumflow/fluxvariablescachefiller.hh

@@ -525,7 +525,7 @@ private:
 
     //! Solves the local systems and stores the result in the handles
     template< class InteractionVolume, class DataHandle>
-    void prepareDataHandle_(InteractionVolume& iv, DataHandle& handle, bool forceUpdate)
+    void prepareDataHandle_([[maybe_unused]] InteractionVolume& iv, [[maybe_unused]] DataHandle& handle, [[maybe_unused]] bool forceUpdate)
     {
         // (maybe) solve system subject to intrinsic permeability
         if constexpr (advectionEnabled)