remove yml file

grading-gitlab-ci.yml

-# This CI config file is not used in this repository but instead referenced
-# from each student project (https://gitlab.epfl.ch/help/ci/pipelines/settings#custom-ci-configuration-path)
-# and used to grade them.
-
-workflow:
-  rules:
-    # Don't run the CI on commit messages contain "[no-ci]", used to deploy
-    # assignments without overloading the CI.
-    - if: $CI_COMMIT_MESSAGE !~ /\[no-ci\]/
-
-stages:
-  - build
-  - grade
-
-compile:
-  stage: build
-  timeout: 15m
-  image: laraepfl/labs
-  tags:
-    - cs320
-  except:
-    - tags
-    - master
-  script:
-    - sbt packageSubmission
-  # Output of this job that needs to be stored to be reused in the grade job below
-  artifacts:
-    expire_in: 1 day
-    paths:
-      - binaries.jar
-
-grade:
-  stage: grade
-  timeout: 15m
-  except:
-    - tags
-    - master
-  tags:
-    - cs320
-  image:
-    name: laraepfl/labs:${CI_COMMIT_BRANCH}
-    entrypoint: [""]
-  allow_failure: true
-  before_script:
-    - mkdir -p /shared/submission/
-    - cp binaries.jar /shared/submission/binaries.jar
-  script:
-    - cd /grader
-    - /grader/grade
-    - cat /shared/txtFeedback.txt
-    - grep -q congratulations /shared/txtFeedback.txt