Update .gitlab-ci.yml file remove linter since issue with base Elgg code

.gitlab-ci.yml

@@ -6,19 +6,10 @@
 
 
 stages:
-  - Test
   - Security
   - QA
 
 
-PHP Lint:
-  stage: Test
-  image: its-registry.unl.edu/unl-its/docker-ci/php-lint:7.3
-  tags:
-    - docker
-  script:
-    - php-lint -d . -e .php -e .phtml
-
 Dependency Check:
   stage: Security
   image: its-registry.unl.edu/unl-its/docker-ci/dependency-check