Don't test unsupported PHP versions

.gitlab-ci.yml

@@ -24,22 +24,6 @@ before_script:
   - composer global require automattic/vipwpcs
   - phpcs --config-set installed_paths $HOME/.composer/vendor/wp-coding-standards/wpcs,$HOME/.composer/vendor/automattic/vipwpcs
 
-PHPunit:PHP5.3:MySQL:
-  image: containers.ethitter.com:443/docker/images/php:5.3
-  services:
-    - mysql:5.6
-  script:
-    - phpcs -n
-    - phpunit
-
-PHPunit:PHP5.6:MySQL:
-  image: containers.ethitter.com:443/docker/images/php:5.6
-  services:
-    - mysql:5.6
-  script:
-    - phpcs -n
-    - phpunit
-
 PHPunit:PHP7.0:MySQL:
   image: containers.ethitter.com:443/docker/images/php:7.0
   services: