You have to delete only one line in database.
On your identified news, check [original_content_id] who are duplicate (different of 00000000-0000-0000-0000-000000000000).
You have two lines one with [visible] equals 0 and other equals 1, get the [content_id] on the line with [visible]=0 .
Delete it from [sf_news_items_sf_permissions] :
And delete it from [sf_news_items] :
And it resolve your problem.