Remove unnecessary registration-url parameter from CI deploy

The registration_url parameter is optional and doesn't need to be set in tests. The test already verifies the feature is present and running.

Author: jeremylenz

.github/workflows/test.yml

@@ -153,7 +153,6 @@ jobs:
             --add-feature remote-execution \
             --add-feature bmc \
             --add-feature registration \
-            --registration-url https://quadlet.example.com:8443 \
             ${{ matrix.iop == 'enabled' && '--add-feature iop' || '' }}
       - name: Run tests
         run: |