Remove web UI warnings about OStatus privacy (#5102)

* Remove web UI warnings about OStatus privacy

* yarn run manage:translations

app/javascript/mastodon/locales/defaultMessages.json

@@ -698,10 +698,6 @@
       {
         "defaultMessage": "locked",
         "id": "compose_form.lock_disclaimer.lock"
-      },
-      {
-        "defaultMessage": "Your private status will be delivered to mentioned users on {domains}. Do you trust {domainsCount, plural, one {that server} other {those servers}}? Post privacy only works on Mastodon instances. If {domains} {domainsCount, plural, one {is not a Mastodon instance} other {are not Mastodon instances}}, there will be no indication that your post is private, and it may be boosted or otherwise made visible to unintended recipients.",
-        "id": "compose_form.privacy_disclaimer"
       }
     ],
     "path": "app/javascript/mastodon/features/compose/containers/warning_container.json"