Update the example AWMs to remove hardcoded translations for database lists

The demo Movies AWM that was done for the help center is impacted by the issue XWIKI-14747 (see the description of the issue, the reproducing steps are on this demo application).

Until the application is re-edited, the hardcoded translations will still remain generated in the translations of the application and installed upon application install and the default application entries will be impacted by the issue.

The automatically generated translations for the default entries of the Contributors application should be removed.