remove not required output

Author: wildone

.github/workflows/main.yml

@@ -65,7 +65,6 @@ jobs:
           git config --global user.name "${GITHUB_USERNAME}"
       - name: setup gpg
         run: |
-          echo DISPLAY=$DISPLAY
           source <(curl -sL https://github.com/aem-design/aemdesign-docker/releases/latest/download/setup-gpg.sh)
       - name: docker - mvn clean (cache .m2 in ./build/.m2/repository in repo dir)
         run: $DOCKER_COMMAND mvn clean -DskipTests=true -Dgpg.skip -Dmaven.javadoc.skip=true -Dmaven.source.skip=true -B -Dmaven.repo.local=./build/.m2/repository