Update .gitlab-ci.yml

.gitlab-ci.yml

-
 stages:
     - github-sync
     - test
@@ -40,10 +39,6 @@ enforce_readme:
       - git commit -am "Enforce github readme"
       - git push origin master
 
-before_script:
-    - export NVM_DIR="$HOME/.nvm"
-    - . "$NVM_DIR/nvm.sh"
-
 test:
   stage: test
   tags: