diff --git a/src/backend/core/api/viewsets.py b/src/backend/core/api/viewsets.py
index 930dce20c..ce8911711 100644
--- a/src/backend/core/api/viewsets.py
+++ b/src/backend/core/api/viewsets.py
@@ -795,14 +795,6 @@ class DocumentViewSet(
         """Override to implement a soft delete instead of dumping the record in database."""
         instance.soft_delete()
 
-        # the collaboration server holds the content: until it is told, it goes
-        # on serving the document to the clients editing it. On commit, because
-        # the task reads back what was just written to know what to report — it
-        # would find the document alive and restore it instead
-        transaction.on_commit(
-            partial(sync_service_deletions_in_cascade.delay, str(instance.id))
-        )
-
         posthog_capture(
             PosthogEventName.DOC_DELETED, self.request.user, {}, document=instance
         )
diff --git a/src/backend/core/tests/documents/test_api_documents_delete.py b/src/backend/core/tests/documents/test_api_documents_delete.py
index 6672b1376..f89503eb7 100644
--- a/src/backend/core/tests/documents/test_api_documents_delete.py
+++ b/src/backend/core/tests/documents/test_api_documents_delete.py
@@ -148,32 +148,3 @@ def test_api_documents_delete_authenticated_owner(via, mock_user_teams):
         {},
         document=document,
     )
-
-
-def test_api_documents_delete_reports_the_deletion_to_the_collaboration_server(
-    django_capture_on_commit_callbacks,
-):
-    """
-    Deleting a document should tell the collaboration server, which holds its
-    content and would otherwise go on serving it to the clients editing it.
-    """
-    user = factories.UserFactory()
-    document = factories.DocumentFactory(users=[(user, "owner")])
-    child = factories.DocumentFactory(parent=document)
-
-    client = APIClient()
-    client.force_login(user)
-
-    # the report is made once the deletion is committed: the task reads it back
-    with (
-        mock.patch("core.tasks.documents.YHubService") as mock_service,
-        django_capture_on_commit_callbacks(execute=True),
-    ):
-        response = client.delete(f"/api/v1.0/documents/{document.id!s}/")
-
-    assert response.status_code == 204
-    # the subtree goes with it
-    assert mock_service.return_value.delete_ydoc.call_args_list == [
-        mock.call(document),
-        mock.call(child),
-    ]