docs(equations): removed some old docs

src/include/serif/equations/central_density.hpp

@@ -50,7 +50,6 @@ namespace serif::equations {
         static constexpr bool affine = true;                                   ///< Whether the equation is affine, that is whether the equation is linear in the fields being evaluated. This is only used for compile-time checks
         static constexpr std::array<double, 3> reference_position{};           ///< The reference position of the equation, this is only used for compile-time checks and is not used in the evaluation of the equation.
 
-        /// Own the EOS and resolve the strictly positive prescribed density once.
 
         /**
          * @brief Construct a central density constraint.
@@ -75,7 +74,6 @@ namespace serif::equations {
             serif_ensure<SERiFErrorCode::NON_FINITE_VALUE_ERROR, std::domain_error>(std::isfinite(m_target_enthalpy), "The EOS returned a non-finite central enthalpy.");
         }
 
-        /// The border backend places this scalar condition in its global phase row.
 
         /**
          * @brief Evaluate the central density constraint at a given point.