rev_sparse_hes.hpp: remove two helper functions.
rev_sparse_hes.hpp: remove two helper functions.

kaskr/CppAD,wegamekinglc/CppAD,wegamekinglc/CppAD,kaskr/CppAD,kaskr/CppAD,wegamekinglc/CppAD,kaskr/CppAD,kaskr/CppAD,wegamekinglc/CppAD,wegamekinglc/CppAD