Remove CI

.gitlab-ci.yml

-image: ubuntu:17.10
-
-stages:
-  - test
-
-run_tests:
-  stage: test
-  script:
-    - apt-get update && apt-get install -y python3 python3-pip
-    - python3 -m pip install -r requirements.txt
-    - python3 -m coverage run -m py.test && python3 -m coverage report
-  tags:
-    - regular
-    - ubuntu