DeadOilPvt: some simplifications

remove unused constructors and explicit comparison operator

opm/material/fluidsystems/blackoilpvt/DeadOilPvt.hpp

@@ -46,17 +46,6 @@ class DeadOilPvt
 public:
     using TabulatedOneDFunction = Tabulated1DFunction<Scalar>;
 
-    DeadOilPvt() = default;
-    DeadOilPvt(const std::vector<Scalar>& oilReferenceDensity,
-               const std::vector<TabulatedOneDFunction>& inverseOilB,
-               const std::vector<TabulatedOneDFunction>& oilMu,
-               const std::vector<TabulatedOneDFunction>& inverseOilBMu)
-        : oilReferenceDensity_(oilReferenceDensity)
-        , inverseOilB_(inverseOilB)
-        , oilMu_(oilMu)
-        , inverseOilBMu_(inverseOilBMu)
-    { }
-
 #if HAVE_ECL_INPUT
     /*!
      * \brief Initialize the oil parameters via the data specified by the PVDO ECL keyword.
@@ -249,7 +238,7 @@ public:
         throw std::runtime_error("Not implemented: The PVT model does not provide a diffusionCoefficient()");
     }
 
-    const Scalar oilReferenceDensity(unsigned regionIdx) const
+    Scalar oilReferenceDensity(unsigned regionIdx) const
     { return oilReferenceDensity_[regionIdx]; }
 
     const std::vector<TabulatedOneDFunction>& inverseOilB() const
@@ -261,14 +250,6 @@ public:
     const std::vector<TabulatedOneDFunction>& inverseOilBMu() const
     { return inverseOilBMu_; }
 
-    bool operator==(const DeadOilPvt<Scalar>& data) const
-    {
-        return this->oilReferenceDensity_ == data.oilReferenceDensity_ &&
-               this->inverseOilB() == data.inverseOilB() &&
-               this->oilMu() == data.oilMu() &&
-               this->inverseOilBMu() == data.inverseOilBMu();
-    }
-
 private:
     std::vector<Scalar> oilReferenceDensity_;
     std::vector<TabulatedOneDFunction> inverseOilB_;