DES MOINES — A remake of the Iowa Legislature continued last week with a couple more significant retirements.Reps. Guy Vander Linden and David Heaton, Republicans who lead the Iowa House’s committees on tax policy and the health care budget, announced they will not seek re-election.Those retirements mean two of the House’s most important committees will have new leaders in 2019.Heaton, who is from Mount Pleasant, has served in the Iowa House since 1995 and Vander Linden, who is from Oskaloosa, since 2011.Their announcements come a week after Democratic Sen.