Deprecate unused VCS functions

include/cantera/equil/vcs_internal.h

@@ -499,6 +499,7 @@ bool vcs_doubleEqual(double d1, double d2);
  *  The vector is returned sorted from lowest to highest.
  *
  * @param x Reference to a vector of ints.
+ * @deprecated
  */
 void vcs_heapsort(std::vector<int> &x);
 
@@ -506,6 +507,7 @@ void vcs_heapsort(std::vector<int> &x);
 /*!
  * @param xOrderedUnique       Ordered vector of unique ints that were part of the original list
  * @param x                    Reference to a constant vector of ints.
+ * @deprecated
  */
 void vcs_orderedUnique(std::vector<int> & xOrderedUnique, const std::vector<int> & x);
 

include/cantera/equil/vcs_solve.h

@@ -1482,6 +1482,7 @@ public:
      *         (These are the actionable element constraints).
      *
      * @return  Returns number of components. This is the rank of the matrix
+     * @deprecated
      */
     int vcs_rank(const double* awtmp, size_t numSpecies, const double* matrix,  size_t numElemConstraints,
                  std::vector<size_t> &compRes, std::vector<size_t> &elemComp, int* const usedZeroedSpecies) const;