Remove link step from demo job, rely on build-packages instead

Author: OskarStark

.github/workflows/integration-tests.yaml

@@ -104,10 +104,6 @@ jobs:
                   composer-options: "--no-scripts"
                   working-directory: demo
 
-            - name: Link demo
-              working-directory: demo
-              run: ../link
-
             - run: composer run-script auto-scripts --no-interaction
               working-directory: demo