removed old .gitlab-ci.yml file

.gitignore

@@ -1,4 +1,5 @@
 .jekyll-metadata
+.jekyll-cache
 .htaccess
 .DS_Store
 .sass-cache

.gitlab-ci.yml

@@ -1,20 +0,0 @@
-stages:
-  - deploy
-
-deploy:
-  stage: deploy
-  tags:
-    - jekyll
-  script:
-    - apt-get update
-    - apt-get install -y ruby-full build-essential zlib1g-dev rsync
-    - gem install bundler jekyll
-    - bundle install
-    - jekyll build -d public
-    - rsync -rvI --delete public/ /srv/socialnerds.org/
-  environment:
-    name: production
-    url: https://socialnerds.org
-  only:
-  - master
-