SHARE integration seems dead and should be removed from the guides

[pdurbin]

SHARE was announced here, among other places: https://www.arl.org/news/share-launches-beta-of-share-notify-for-informing-stakeholders-when-research-is-released/

However, the service seems dead. We should remove it from the guides. Here's how it looks as of https://guides.dataverse.org/en/6.8/admin/integrations.html#share

[pdurbin]

I found more about the SHARE shutdown at https://www.arl.org/news/share-database-shutting-down-while-share-services-enter-new-phase/

Via https://www.cos.io/about/news/share-open-dataset-endless-possibilities