Simplify Ansible code, remove old files

.circleci/config.yml

@@ -1,45 +0,0 @@
-version: 2
-
-jobs:
-  build:
-    docker:
-      - image: circleci/php:7.1
-    steps:
-      - checkout
-      - restore_cache:
-          keys:
-            - v1-dependencies-{{ checksum "composer.json" }}
-            - v1-dependencies-
-      - run: composer install -n --prefer-dist
-      - save_cache:
-          paths:
-            - ./vendor
-          key: v1-dependencies-{{ checksum "composer.json" }}
-
-  deploy:
-    docker:
-      - image: ansible/ansible:ubuntu1604
-        environment:
-          ANSIBLE_HOST_KEY_CHECKING: no
-    steps:
-      - run:
-          name: Install system packages.
-          command: pip install --upgrade pip && pip install ansible
-      - checkout
-      - restore_cache:
-          key: v1-{{ .Branch }}-{{ checksum "./ansible/requirements.yml" }}
-      - run: ansible-galaxy install -r ansible/requirements.yml
-      - save_cache:
-          key: v1-{{ .Branch }}-{{ checksum "./ansible/requirements.yml" }}
-          paths:
-            - '/root/.ansible/roles'
-      - run: ansible-playbook ansible/deploy.yml -i ansible/hosts -e 'git_branch=master' -u opdavies --become
-
-workflows:
-  version: 2
-  build_test_and_deploy:
-    jobs:
-      - build
-      - deploy:
-          requires:
-            - build