CI: fix app version fix

.forgejo/workflows/test_and_build.yaml

@@ -84,8 +84,6 @@ jobs:
       - name: Build the container image
         if: fromJSON(steps.builder.outputs.run)
         uses: actions/buildah-build@v1
-        env:
-          VERSION: ${{ steps.version.outputs.version }}
         with:
           image: treetrail-backend
           oci: true