Remove launch_cfn

playbooks/roles/launch_cfn/defaults/main.yml

----
-#
-# edX Configuration
-#
-# github:     https://github.com/edx/configuration
-# wiki:       https://github.com/edx/configuration/wiki
-# code style: https://github.com/edx/configuration/wiki/Ansible-Coding-Conventions
-# license:    https://github.com/edx/configuration/blob/master/LICENSE.TXT
-#
-##
-# Defaults for role launch_cfn
-# 
-
-#
-# vars are namespace with the module name.
-#
-launch_cfn_role_name: launch_cfn
-
-#
-# OS packages
-#
-
-launch_cfn_debian_pkgs: []
-
-launch_cfn_redhat_pkgs: []

playbooks/roles/launch_cfn/handlers/main.yml

----
-#
-# edX Configuration
-#
-# github:     https://github.com/edx/configuration
-# wiki:       https://github.com/edx/configuration/wiki
-# code style: https://github.com/edx/configuration/wiki/Ansible-Coding-Conventions
-# license:    https://github.com/edx/configuration/blob/master/LICENSE.TXT
-#
-#
-#
-# Handlers for role launch_cfn
-# 
-# Overview:
-# 
-#
-- name: launch_cfn | notify me
-  debug: msg="stub handler"

playbooks/roles/launch_cfn/meta/main.yml

----
-#
-# edX Configuration
-#
-# github:     https://github.com/edx/configuration
-# wiki:       https://github.com/edx/configuration/wiki
-# code style: https://github.com/edx/configuration/wiki/Ansible-Coding-Conventions
-# license:    https://github.com/edx/configuration/blob/master/LICENSE.TXT
-#
-##
-# Role includes for role launch_cfn
-# 
-# Example:
-#
-# dependencies:
-#   - {
-#   role: my_role 
-#   my_role_var0: "foo"
-#   my_role_var1: "bar"
-# }

playbooks/roles/launch_cfn/tasks/main.yml

----
-#
-# edX Configuration
-#
-# github:     https://github.com/edx/configuration
-# wiki:       https://github.com/edx/configuration/wiki
-# code style: https://github.com/edx/configuration/wiki/Ansible-Coding-Conventions
-# license:    https://github.com/edx/configuration/blob/master/LICENSE.TXT
-#
-#
-#
-# Tasks for role launch_cfn
-# 
-# Overview:
-# Create a cloudformation stack.
-# 
-#
-# Dependencies:
-#
-# 
-# Example play:
-#
-#
-
-- name: Create the stack.
-  cloudformation: >
-    stack_name="{{CFN_NAME}}"
-    region="{{CFN_REGION}}"
-    template="/Users/feanil/src/configuration/cloudformation_templates/edx-reference-architecture.json"
-  args:
-    template_parameters:
-      KeyName: 'continuous-integration'
-