Remove null-label since not being used anymore

It is in use in all the submodule we call and we delegate down to them
for naming.

Author: joshmyers

README.md

@@ -196,7 +196,6 @@ Are you using this project or any of our other projects? Consider [leaving a tes
 
 Check out these related projects.
 
-- [terraform-null-label](https://github.com/cloudposse/terraform-null-label) - Terraform Module to define a consistent naming convention by (namespace, stage, name, [attributes])
 - [terraform-aws-rds-cluster](https://github.com/cloudposse/terraform-aws-rds-cluster) - Terraform module to provision an RDS Aurora cluster for MySQL or Postgres
 - [terraform-aws-route53-cluster-hostname](https://github.com/cloudposse/terraform-aws-route53-cluster-hostname) - Terraform module to define a consistent AWS Route53 hostname
 - [terraform-aws-kops-metadata](https://github.com/cloudposse/terraform-aws-kops-metadata) - Terraform module to lookup resources within a Kops cluster for easier integration with Terraform

README.yaml

@@ -29,9 +29,6 @@ badges:
     url: "https://slack.cloudposse.com"
 
 related:
-  - name: "terraform-null-label"
-    description: "Terraform Module to define a consistent naming convention by (namespace, stage, name, [attributes])"
-    url: "https://github.com/cloudposse/terraform-null-label"
   - name: "terraform-aws-rds-cluster"
     description: "Terraform module to provision an RDS Aurora cluster for MySQL or Postgres"
     url: "https://github.com/cloudposse/terraform-aws-rds-cluster"

main.tf

@@ -97,17 +97,6 @@ variable "enabled" {
   description = "Set to false to prevent the module from creating any resources"
 }
 
-module "label" {
-  source     = "git::https://github.com/cloudposse/terraform-null-label.git?ref=tags/0.3.5"
-  namespace  = "${var.namespace}"
-  name       = "${var.name}"
-  stage      = "${var.stage}"
-  delimiter  = "${var.delimiter}"
-  attributes = "${var.attributes}"
-  tags       = "${var.tags}"
-  enabled    = "${var.enabled}"
-}
-
 data "aws_region" "current" {}
 
 data "aws_availability_zones" "available" {}