update: remove instance target group from ECS module

modules/ecs/autoscaling.tf

@@ -9,7 +9,6 @@ resource "aws_autoscaling_group" "this" {
     version = "$Latest"
   }
 
-  target_group_arns     = [aws_lb_target_group.instance_target[0].arn]
   protect_from_scale_in = true
 
   tag {

modules/ecs/load-balancer.tf

@@ -1,19 +1,3 @@
-resource "aws_lb_target_group" "instance_target" {
-  count       = var.endpoint_details != null ? 1 : 0
-  name        = format("%s-%s-instance", var.service_name, terraform.workspace)
-  port        = local.main_container_port
-  protocol    = "HTTP"
-  vpc_id      = var.vpc_id
-  target_type = local.alb_instance_target_type
-
-  health_check {
-    protocol            = "HTTP"
-    interval            = 10
-    unhealthy_threshold = 6
-    matcher             = "200,301-399"
-  }
-}
-
 resource "aws_lb_target_group" "ip_target" {
   count       = var.endpoint_details != null ? 1 : 0
   name        = format("%s-%s-ip", var.service_name, terraform.workspace)

modules/ecs/locals.tf

@@ -29,7 +29,6 @@ locals {
   iam_instance_role_name_prefix            = "ecs-instance-role"
   iam_instance_profile_name_prefix         = "ecs-instance-profile"
   task_definition_network_mode             = "awsvpc"
-  alb_instance_target_type                 = "instance"
   alb_ip_target_type                       = "ip"
   authenticate_oidc_issuer                 = "https://accounts.google.com"
   authenticate_oidc_user_info_endpoint     = "https://openidconnect.googleapis.com/v1/userinfo"