Remove .gitlab-ci.yml

.gitlab-ci.yml

-image: ci-gajim:1.3
-
-stages:
-  - test
-  - build
-
-run-test:
-  stage: test
-  script:
-    - python3 -m pylint nbxmpp --disable=C0103,C0201,C0301,C0326,C0330,W0201,W0212,W0221,W0231,W0233,W0621,W0622,R0201,E1101,E1135
-    - coverage run --source=nbxmpp -m unittest discover -v
-    - coverage report -mi
-    - coverage xml -i
-  coverage: "/TOTAL.+ ([0-9]{1,3}%)/"
-  artifacts:
-    reports:
-      cobertura: coverage.xml
-
-# C0103 invalid-name
-# C0201 consider-iterating-dictionary
-# C0301 line-too-long
-# C0326 bad-whitespace
-# C0330 bad-continuation
-# W0201 attribute-defined-outside-init
-# W0212 protected-access
-# W0221 arguments-differ
-# W0231 super-init-not-called
-# W0233 non-parent-init-called
-# W0621 redefined-outer-name
-# W0622 redefined-builtin
-# R0201 no-self-use
-# E1101 no-member
-# E1135 unsupported-membership-test
-
-run-build:
-  stage: build
-  script:
-    - python3 setup.py sdist
-
-  artifacts:
-    name: "nbxmpp-$CI_COMMIT_SHA"
-    expire_in: 1 week
-    paths:
-      - dist/nbxmpp-*.tar.gz