Remove unused variable.

Author: oleburghardt

SU2_CFD/include/solvers/CDiscAdjSolver.hpp

@@ -57,7 +57,7 @@ class CDiscAdjSolver final : public CSolver {
   su2double Total_Sens_BPress;   /*!< \brief Total sensitivity to outlet pressure. */
   su2double Total_Sens_Density;  /*!< \brief Total sensitivity to initial density (incompressible). */
   su2double Total_Sens_ModVel;   /*!< \brief Total sensitivity to inlet velocity (incompressible). */
-  su2double Mach, Alpha, Beta, Pressure, Temperature, BPressure, ModVel;
+  su2double Mach, Alpha, Beta, Temperature, BPressure, ModVel;
   su2double TemperatureRad, Total_Sens_Temp_Rad;
 
   CDiscAdjVariable* nodes = nullptr;  /*!< \brief The highest level in the variable hierarchy this solver can safely use. */

SU2_CFD/src/solvers/CDiscAdjSolver.cpp

@@ -184,8 +184,8 @@ void CDiscAdjSolver::RegisterVariables(CGeometry *geometry, CConfig *config, boo
     Alpha                  = config->GetAoA()*PI_NUMBER/180.0;
     Beta                   = config->GetAoS()*PI_NUMBER/180.0;
     Mach                   = config->GetMach();
-    /*--- Pressure and Temperature values are accessed directly by the solver,
-     * so we register the value in the config file. ---*/
+    /*--- Pressure and Temperature can be registered directly via their config file value
+     * (no further treatment required here). ---*/
     su2double& Pressure    = config->GetPressure_FreeStreamND();
     su2double& Temperature = config->GetTemperature_FreeStreamND();