remove image name

Author: JulienChampagnol

.github/workflows/CD.yml

@@ -8,7 +8,6 @@ jobs:
   docker-build-squash-push:
     uses: Geode-solutions/actions/.github/workflows/docker-build-squash-push.yml@master
     with:
-      image_name: 'opengeodeweb-router'
       tag: ${{ github.ref_name }}
     secrets: 
       TOKEN: ${{secrets.GITHUB_TOKEN}}