Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -41,7 +41,6 @@ unit-test-job:   # This job runs in the test stage.
     - echo "Running unit tests..."
     - source ansible/bin/activate
     - which ansible-playbook
-    - which python3
     - which python
     - ansible --version
     - ansible-playbook site.yml -b -l localhost