Fix tagging of image builder

Author: thejsj

ansible/roles/image-builder/tasks/main.yml

@@ -9,8 +9,3 @@
   tags: deploy
   become: true
   command: docker build --no-cache --tag="{{ image_builder_docker_namespace }}:{{ git_branch }}" /opt/runnable/image-builder
-
-- name: tag the image-builder with registry.runnable.com
-  tags: deploy
-  become: true
-  command: docker tag {{ image_builder_docker_namespace }}:{{ git_branch }} registry.runnable.com/{{ image_builder_docker_namespace }}:{{ git_branch }}