revert gitlab-ci until we have a working configuration

.gitlab-ci.yml

@@ -1,41 +0,0 @@
-# Select image from https://hub.docker.com/_/php/
-image: php:7.1
-
-# Select what we should cache
-cache:
-  paths:
-  - vendor/
-
-before_script:
-# Install git, the php image doesn't have installed
-- apt-get update -yqq
-- apt-get install git -yqq
-
-# Install php-gd 
-- apt-get install libfreetype6-dev libjpeg62-turbo-dev libpng-dev -yqq
-- docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/
-- docker-php-ext-install -j$(nproc) gd
-
-# Install mysql driver
-- docker-php-ext-install pdo_mysql
-
-# Install composer
-- curl -sS https://getcomposer.org/installer | php
-
-# Install all project dependencies
-- php composer.phar install
-
-services:
-- mysql
-
-variables:
-  # Configure mysql service (https://hub.docker.com/_/mysql/)
-  MYSQL_DATABASE: hello_world_test
-  MYSQL_ROOT_PASSWORD: mysql
-
-# We test PHP7 (the default) with MySQL
-test:mysql:
-  script:
-  - vendor/bin/phpunit --configuration phpunit_mysql.xml --coverage-text
-
-